How many words with OS are there?

This page lists 5761 words with OS from our dictionary, each shown with its Scrabble score.

Are these words valid in official Scrabble play?

Not necessarily. This site uses the open ENABLE word list; check the official dictionary used by your game or tournament.

Words With OS

All 5761 words in our dictionary that contain OS — sorted by Scrabble score.

5761 words · number = Scrabble score · sorted highest score first · showing top 1200

photosynthesize35 psychosexuality35 philosophizing34 phosphatization34 psychosexually34 heterozygosity33 homozygosity33 hyposensitizing33 philosophized33 philosophizers33 phosphatizing33 homozygosities32 hyposensitized32 hypostatization32 philosophizer32 philosophizes32 phosphatized32 apostrophizing31 exophthalmoses31 hyposensitizes31 hypostatizing31 intermezzos31 juxtapositional31 ophthalmoscopic31 ophthalmoscopy31 philosophize31 phosphatizes31 phosphorylative31 psychosyntheses31 psychosynthesis31 apostrophized30 gyrostabilizers30 hygroscopicity30 hyperviscosity30 hyposensitize30 hypostatized30 juxtapositions30 lymphocytosises30 nonhospitalized30 philosophically30 phosphatize30 photosensitized30 rehospitalizing30 apostrophizes29 chemosynthetic29 cosmeticizing29 dephosphorylate29 exophthalmos29 gyrostabilizer29 heterozygoses29 heterozygosis29 homozygoses29 homozygosis29 hospitalization29 hypostatizes29 juxtaposition29 lymphosarcomata29 microsporophyll29 monospecificity29 ophthalmoscopes29 phosphorescence29 phosphorolytic29 phosphorylating29 photosensitizer29 photosensitizes29 proselytization29 psychosexual29 psychosocially29 pyrophosphates29 rehospitalized29 rhizospheres29 thyrotoxicoses29 thyrotoxicosis29 apostrophize28 apotheosizing28 cosmeticized28 cosmochemistry28 heterosexuality28 hexosaminidases28 homosexuality28 hospitalizing28 hypostatize28 juxtaposing28 lymphocytoses28 lymphocytosis28 lymphosarcomas28 macrocosmically28 macroscopically28 metempsychoses28 metempsychosis28 microcosmically28 microscopically28 ophthalmoscope28 orthophosphates28 palazzos28 phosphokinases28 phosphorylated28 phosphorylation28 photosensitize28 phytosociology28 postapocalyptic28 posthemorrhagic28 proselytizing28 psychosomatics28 pyrophosphate28 rehospitalizes28 rhizosphere28 apotheosized27 atmospherically27 chemosyntheses27 chemosynthesis27 chlamydospores27 chromospheric27 cosmeticizes27 cryptococcoses27 cryptococcosis27 decomposability27 explosivenesses27 gyroscopically27 hemochromatoses27 hemochromatosis27 heterosexually27 hexosaminidase27 homosexualities27 homosexually27 hospitalized27 hydrostatically27 hypostatically27 juxtaposed27 lymphosarcoma27 monosyllabicity27 myxomatosises27 nonhygroscopic27 omphaloskepses27 omphaloskepsis27 orthophosphate27 pharmacognostic27 phosphatidyls27 phosphocreatine27 phosphokinase27 phosphoproteins27 phosphorescing27 phosphorolyses27 phosphorolysis27 phosphorylases27 phosphorylates27 photosynthetic27 postexperience27 proselytized27 proselytizers27 psychosomatic27 psychosurgery27 psychosurgical27 quartzose27 rehospitalize27 superphosphates27 terrazzos27 theosophically27 zoosporangium27 amphiprostyles26 anthroposophy26 antihomosexual26 apotheosizes26 biostratigraphy26 bronchoscopic26 bronchoscopists26 bronchoscopy26 centrosymmetric26 chlamydospore26 cosmeticize26 cosmochemical26 cosmographical26 explosively26 fossilizations26 gazpachos26 geostrophically26 glycosidically26 hospitalizes26 hydrospheric26 hyperkeratoses26 hyperkeratosis26 ichthyosaurians26 juxtaposes26 metaphosphates26 mezzos26 microseismicity26 microsporocytes26 nonhomosexuals26 organophosphate26 ozonospheres26 pharmacognosy26 phosphatidyl26 phospholipases26 phospholipids26 phosphoprotein26 phosphoresced26 phosphorescent26 phosphorylase26 phosphorylate26 photocomposing26 postworkshop26 proscriptively26 proselytizer26 proselytizes26 prosopography26 psychosurgeries26 quebrachos26 scherzandos26 submicroscopic26 superphosphate26 zucchettos26 amphiprostyle25 anthroposophies25 apotheosize25 azoospermias25 blepharospasms25 bronchoscopies25 bronchoscopist25 bronchospastic25 chromosomally25 chromospheres25 cinquecentos25 deoxyriboses25 echinococcoses25 echinococcosis25 explosiveness25 expostulatory25 fossilization25 hospitalize25 hyoscyamines25 hyperhidroses25 hyperhidrosis25 ichthyosaurian25 introspectively25 ionospherically25 juxtapose25 lachrymosely25 lachrymosity25 lymphomatoses25 lymphomatosis25 metaphosphate25 methylcellulose25 microspherical25 microsporocyte25 microswitches25 monosaccharides25 myxomatoses25 myxomatosis25 nonexplosives25 nonhomosexual25 nonphilosophers25 nucleosynthetic25 osteopathically25 overexposing25 overexposures25 ozonosphere25 phagocytosing25 pharmacognosies25 philosophical25 philosophising25 phosphatidic25 phospholipase25 phospholipid25 phosphoresces25 photocomposed25 photocomposers25 photosynthates25 photosyntheses25 photosynthesis25 physostigmines25 postconquest25 postmastectomy25 postoperatively25 postvasectomy25 proselytize25 prosencephalic25 prosopographies25 prospectively25 psychosurgeons25 retrospectively25 subatmospheric25 synchroscopes25 tachistoscopic25 thermospheric25 thermostability25 xenodiagnostic25 zecchinos25 zygospores25 aerosolizations24 ankylostomiases24 ankylostomiasis24 apostatizing24 asthenospheric24 azoospermia24 blepharospasm24 bronchoscopes24 bronchospasms24 chaparajos24 chaparejos24 cheechakos24 chromosphere24 compositionally24 cosmochemists24 cosmographic24 cosmography24 cosmologically24 crosshatching24 cytostatically24 deoxyribose24 electroshocks24 endoscopically24 exospheric24 fossilizing24 gymnosophists24 gymnospermy24 heterokaryoses24 heterokaryosis24 hydrospheres24 hygroscopic24 hyoscyamine24 hypospadiases24 kaleidoscopic24 lachrymosities24 magnetospheric24 metamorphosing24 microsporangium24 monosaccharide24 mosquitoey24 nonexplosive24 nonphilosopher24 oligosaccharide24 oscillographic24 oscillography24 overexposed24 overexposure24 paedomorphoses24 paedomorphosis24 phagocytosed24 philosophised24 phosphoniums24 phosphoresce24 phosphoritic24 phosphoryls24 photocomposer24 photocomposes24 photospheric24 photosynthate24 physostigmine24 postembryonic24 postfreeze24 posthypnotic24 postinjection24 postmasterships24 postpositively24 postvaccination24 prosthetically24 psychoneuroses24 psychoneurosis24 psychosocial24 psychosurgeon24 quattrocentos24 sextodecimos24 sigmoidoscopy24 symposiarchs24 synchroscope24 toxoplasmoses24 toxoplasmosis24 underexposing24 underexposures24 zoosporangia24 zygosity24 zygospore24 aerosolization23 antimosquito23 aposematically23 apostatized23 ariboflavinoses23 ariboflavinosis23 backcrossing23 biosystematics23 bronchoscope23 bronchospasm23 carcinosarcomas23 cephalosporins23 chechakos23 chemiosmotic23 chemosurgery23 chemosurgical23 corymbosely23 cosmochemist23 cosmographers23 cosmographies23 cosmopolitanism23 cosponsorships23 crosshatched23 crossopterygian23 cyclostyling23 diphosphates23 electroshock23 endosymbiotic23 exoskeletons23 expostulating23 expostulations23 fibrosarcomata23 fossilized23 geosynchronous23 glycosylating23 glycosylations23 gymnosophist23 gymnospermies23 gymnospermous23 heterosexuals23 homoscedastic23 homosexuals23 hydrosphere23 ichthyosaurs23 indecomposable23 isochromosomes23 laryngoscopy23 leukocytosises23 mackintoshes23 metamorphosed23 microscopical23 microswitch23 monospecific23 musculoskeletal23 myelofibroses23 myelofibrosis23 nonchromosomal23 nonphosphates23 nucleosyntheses23 nucleosynthesis23 oscillographies23 ostracizing23 overexposes23 phagocytoses23 phagocytosis23 philosophic23 philosophises23 philosophy23 phosphatides23 phosphaturias23 phosphonium23 phosphoryl23 photocompose23 photopositive23 postcopulatory23 postemergency23 postexercise23 postexposure23 postfixing23 postischemic23 postmastership23 postvagotomy23 prepositively23 prognosticative23 prosencephalon23 rhodochrosites23 sforzandos23 sigmoidoscopies23 spectroscopic23 spectroscopists23 spectroscopy23 squooshiest23 squooshing23 squooshy23 stereospecific23 symposiarch23 tachistoscopes23 thermospheres23 triphosphates23 ultramicroscope23 underexposed23 underexposure23 zygosities23 actinomycoses22 actinomycosis22 aerosolizing22 ancylostomiases22 ancylostomiasis22 apostatizes22 apostrophising22 appositively22 asthenospheres22 atherosclerotic22 backcrossed22 bioscientific22 biosynthetic22 biosystematic22 biosystematists22 blastomycoses22 blastomycosis22 boschboks22 carcinosarcoma22 cephalosporin22 chemosurgeries22 chorizos22 contrapositives22 cosmographer22 cosmopolitisms22 cosponsorship22 crosshatches22 cyclosporines22 cyclostyled22 cysticercoses22 cysticercosis22 cystoscopic22 cystoscopy22 cytoskeletons22 dichroscopes22 diphosphate22 ecchymoses22 ecchymosis22 electropositive22 exocytoses22 exocytosis22 exoskeletal22 exoskeleton22 exospheres22 explosives22 expositive22 expository22 expostulated22 expostulation22 fibrosarcomas22 forzandos22 fossilizes22 glycosylated22 glycosylation22 heterosexual22 homosexual22 hydrospaces22 hyperostotic22 hypospadias22 ichthyosaur22 immunosuppress22 impecuniosity22 impossibility22 inhospitably22 isochromosome22 jackaroos22 jackeroos22 kaleidoscopes22 kolkhosy22 kyboshing22 laryngoscopies22 lithospheric22 magnetospheres22 majordomos22 metamorphoses22 metamorphosis22 microporosity22 neuroscientific22 nonphosphate22 octosyllabics22 ostracized22 overexpose22 phagocytose22 philosophers22 philosophies22 philosophise22 phosphatases22 phosphatic22 phosphatide22 phosphaturia22 phosphoric22 phosphorites22 phosphoruses22 photosensitive22 photospheres22 photosystems22 polyribosomal22 polyribosomes22 postconception22 postembryonal22 postfixed22 posthumously22 postproductions22 postpubescents22 poststimulatory22 prepositionally22 prosencephala22 prostacyclins22 prostatectomy22 prosthodontics22 pseudoscorpions22 purposefully22 purposivenesses22 rhodochrosite22 scherzos22 schistosomiases22 schistosomiasis22 seropositivity22 spectroscopies22 spectroscopist22 squooshed22 squooshier22 superimposable22 tachistoscope22 technostructure22 theosophical22 thermosphere22 tracheostomy22 triphosphate22 trypanosomiases22 trypanosomiasis22 underexposes22 viscosimetric22 xenodiagnoses22 xenodiagnosis22 zapateados22 zemstvos22 zoosperms22 zoosporic22 zydecos22 zymosans22 aerosolized21 afficionados21 agamospermy21 agranulocytoses21 agranulocytosis21 anfractuosity21 ankylosauruses21 apostatize21 apostrophised21 arthroscopic21 arthroscopy21 asthenosphere21 atmospherics21 azygoses21 backcrosses21 biosystematist21 boschbok21 boshvarks21 candyflosses21 cappuccinos21 chiaroscurists21 chondriosomes21 composednesses21 contrapositive21 coprosperity21 cosmetically21 cosmopolitism21 counterproposal21 crosspatches21 crossruffing21 cryoscopic21 cryoscopy21 cyclosporine21 cyclostyles21 cystoscopies21 cytoskeletal21 cytoskeleton21 decomposable21 decompositions21 diagnostically21 dichlorvoses21 dichroscope21 didjeridoos21 disposability21 endosymbionts21 endosymbioses21 endosymbiosis21 exosphere21 explosive21 expositional21 expostulates21 fibrosarcoma21 fluoroscopic21 fluoroscoping21 fluoroscopists21 fluoroscopy21 fossilize21 galvanoscopes21 garbanzos21 glossographers21 glycosylates21 gymnosperms21 hagioscopic21 headforemost21 hemicelluloses21 histoplasmoses21 histoplasmosis21 homosexes21 hydrospace21 hydrostatics21 hypoglossals21 hypostyles21 idiosyncrasy21 idiosyncratic21 immunodiagnoses21 immunodiagnosis21 impecuniosities21 impossibilities21 inhospitality21 jocosenesses21 kaleidoscope21 kyboshed21 laryngoscopes21 leukocytoses21 leukocytosis21 mackintosh21 macrocosmic21 macrocytoses21 macrocytosis21 macroscopic21 macrostructural21 macrostructures21 magnetosphere21 metamorphose21 microcosmic21 microcosmoses21 microporosities21 microscopic21 microscopists21 microscopy21 microspheres21 microsporangia21 microstructural21 microstructures21 monosyllabic21 monosynaptic21 mosquitoes21 mossbacked21 muchachos21 octosyllabic21 opposability21 oscillographs21 oscilloscopic21 osteomyelitides21 ostracizes21 overgenerosity21 philosopher21 philosophes21 phosphatase21 phosphides21 phosphorite21 phosphorous21 photomosaics21 photosphere21 photosystem21 polyhedroses21 polyhedrosis21 polyribosome21 postcardlike21 postconvention21 postdelivery21 postdevaluation21 postdivestiture21 postepileptic21 postexilic21 postfixes21 posthumousness21 postmidnight21 postmodernisms21 postproduction21 postpubescent21 postsecondary21 postsynaptic21 postvaccinal21 preposterously21 presuppositions21 prognosticating21 pronunciamentos21 proscriptive21 prosobranchs21 prostacyclin21 prostatectomies21 prosthodontists21 pseudosciences21 pseudoscorpion21 purposefulness21 purposively21 retrospectives21 schizos21 sforzatos21 spectroscopes21 sporotrichoses21 sporotrichosis21 squamosals21 squamulose21 squooshes21 stethoscopic21 superimposition21 tenosynovitises21 thermoscopes21 tracheostomies21 tropospheric21 underexpose21 unfossiliferous21 zoosperm21 zymosan21 zymoses21 zymosis21 aerosolizes20 agamospermies20 anfractuosities20 antiforeclosure20 apostrophic20 apostrophises20 archipelagos20 arthroscopies20 atheroscleroses20 atherosclerosis20 atmospheric20 autohypnoses20 autohypnosis20 bacteriostatic20 biosyntheses20 biosynthesis20 boshvark20 buckayros20 carcinomatoses20 carcinomatosis20 chiaroscurist20 chondriosome20 chromosomal20 chromosomes20 closemouthed20 composedly20 compositely20 coprosperities20 corrosivenesses20 corticosteroids20 cosurfactants20 crossbowman20 crossbowmen20 crosshatch20 crosslinguistic20 crossruffed20 cruzados20 cruzeiros20 cryoscopies20 cryosurgery20 cryosurgical20 cyclostomes20 cyclostyle20 cystoscopes20 decomposition20 discomposing20 discomposures20 disposabilities20 diverticuloses20 diverticulosis20 electrodeposits20 electroosmotic20 electrosurgery20 electrosurgical20 eleemosynary20 endosymbiont20 ethnosciences20 eugeosynclinal20 eugeosynclines20 expositing20 expositions20 expostulate20 femtoseconds20 fluoroscoped20 fluoroscopies20 fluoroscopist20 fossicking20 frostworks20 galvanoscope20 ghostwriting20 glossographer20 glycosylate20 gymnosperm20 gyroscopic20 hemicellulose20 hospitably20 hydroskis20 hydrostatic20 hyperostoses20 hyperostosis20 hypoglossal20 hypostatic20 hypostomes20 hypostyle20 idiosyncrasies20 immunosorbents20 impossibleness20 imposthumes20 inhospitalities20 introspective20 isosmotically20 jocosely20 jocosity20 kinetoscopes20 kolkhoses20 kyboshes20 kyphoses20 kyphosis20 lachrymose20 laparoscopic20 laparoscopists20 laparoscopy20 laryngoscope20 lignocellulosic20 lithospheres20 macrostructure20 malacostracans20 mesospheric20 microscopies20 microscopist20 microseismic20 microsphere20 microstructure20 microsurgery20 microsurgical20 mishmoshes20 monosyllables20 mosquitos20 multihospital20 nephoscopes20 nonexposed20 octosyllables20 opposabilities20 orthoscopic20 oscillograph20 osmoregulatory20 ostracize20 ostrichlike20 pachinkos20 philosophe20 phosphates20 phosphenes20 phosphide20 phosphids20 phosphines20 phosphites20 phosphores20 phosphorus20 photomosaic20 phytosterols20 pneumoconioses20 pneumoconiosis20 possessively20 postadolescents20 postamputation20 postbiblical20 postboxes20 postcapitalist20 postcranially20 postemergence20 postfractures20 postganglionic20 postholiday20 postholocaust20 postinfection20 postiques20 postmarking20 postmedieval20 postmenopausal20 postmodernism20 postoperative20 postprimary20 postpuberty20 posttransfusion20 postvocalic20 predispositions20 presupposition20 proboscideans20 proboscidians20 prognosticated20 prognostication20 prognosticators20 prosobranch20 prosodically20 prospective20 prosthodontist20 pseudoscience20 pseudoscientist20 pteridosperms20 purposelessly20 purposiveness20 quomodos20 recompositions20 reexposing20 reexposures20 reposefulnesses20 retrospective20 rhinoscopy20 ribonucleosides20 sacrosanctity20 sociosexual20 spectroscope20 spirochetoses20 spirochetosis20 squamosal20 stratospheric20 stroboscopic20 strongyloidoses20 strongyloidosis20 superimposing20 supermachos20 theosophists20 theosophy20 thermoscope20 thermostatting20 undecomposed20 unprepossessing20 urethroscopes20 vaqueros20 viscosimeters20 voluminosity20 whosesoever20 zoospores20 zygoses20 zygosis20 acrostically19 aerosolize19 allosterically19 aluminosilicate19 amyloidosises19 ankylosaurus19 anticorrosives19 apostleships19 apostolicity19 apostrophise19 arthroscopes19 atmosphered19 azygos19 backcross19 baldachinos19 biospheric19 biostatistician19 boshboks19 bosquets19 braggadocios19 candyfloss19 catholicoses19 cerebrospinal19 chiaroscuros19 chromosome19 chymosins19 cockapoos19 cocomposers19 composedness19 compositional19 contrapositions19 coquitos19 corrosively19 corticosteroid19 corticosterones19 cosmetologists19 cosmetology19 cosmically19 cosmogonical19 cosmological19 cosmopolitans19 cosurfactant19 crossability19 crossbandings19 crossbreeding19 crosspatch19 crosswalks19 cryoscopes19 cryosurgeries19 cycloserines19 cyclostome19 cystoscope19 decomposing19 dichlorvos19 dictyosomes19 discomposed19 discomposure19 divertimentos19 dysprosiums19 electrodeposit19 electroscopes19 embarcaderos19 endocytosises19 eosinophilic19 ethnoscience19 eugeosyncline19 explosions19 exposited19 exposition19 expositors19 farthermost19 femtosecond19 fetoscopy19 fianchettos19 fluoroscopes19 fossicked19 fossickers19 fossiliferous19 frostwork19 furthermost19 galactosamines19 galactosemic19 gastroscopic19 gastroscopists19 gastroscopy19 gazabos19 gazebos19 geostrophic19 ghostwriters19 ghostwritten19 glycosidases19 glycosidic19 goosefleshes19 goosenecked19 goshawks19 gossipmongers19 groszy19 hagioscopes19 hallucinosises19 hawknoses19 heterospory19 homosex19 homospory19 hospitalising19 hospitality19 hydroski19 hydrosolic19 hypostome19 immunosorbent19 impossibly19 imposthume19 inappositely19 inhospitable19 introspectional19 jockos19 jocoseness19 jocosities19 josephs19 kakemonos19 karyosomes19 kazoos19 kiboshing19 kinetoscope19 laparoscopies19 laparoscopist19 lazarettos19 libecchios19 lignosulfonates19 lithosphere19 macrofossils19 malacostracan19 mestizos19 meticulosity19 microcosmos19 microfossils19 microscopes19 microseconds19 microsurgeries19 mispositioning19 mononucleosises19 monosyllable19 mosaicking19 mosquito19 mossbacks19 nephoscope19 nephrostomes19 neurosecretory19 nonpurposive19 nosologically19 nostalgically19 octosyllable19 oscilloscopes19 osteoarthritic19 phosphate19 phosphene19 phosphid19 phosphine19 phosphins19 phosphite19 phosphore19 phosphors19 photostatting19 phytosterol19 positivenesses19 positivistic19 possessiveness19 postaccident19 postadolescent19 postclassical19 postcollegiate19 postconsonantal19 postcoronary19 postdebutantes19 postdepression19 postdiluvians19 postdivorce19 posteruptive19 postfeminist19 postfix19 postflight19 postforming19 postfracture19 postharvest19 posthospital19 postinoculation19 postique19 postmarked19 postmillenarian19 postmodernists19 postorgasmic19 postpollination19

Why OS words matter

Words containing OS are handy for Scrabble, Words with Friends and word puzzles — filter the list above by length to find the play you need.

This list by the numbers

Inside this list: 5761 words spanning 2–15 letters. The biggest cluster sits at 8 letters (846 words), 206 entries are Wordle-sized at five letters, and 609 run to seven — bingo length if you can empty the rack. For points, the ceiling is PHOTOSYNTHESIZE, worth 35.

The five biggest scorers on the page: PHOTOSYNTHESIZE (35), PSYCHOSEXUALITY (35), PHILOSOPHIZING (34), PHOSPHATIZATION (34), PSYCHOSEXUALLY (34). AEROSOLIZATIONS (15 letters) stretches furthest, while the list-wide average score sits near 15 points. If you are fishing for these words, keep S (5761 appearances), O (5761) and E (3652) on your rack.

Three words worth learning first

NOS is easy to keep in memory: 3 letters, 3 points, and no awkward tiles to hunt for.
When the rack looks hopeless, OSE (3 letters, 3 points) is the kind of quiet play that keeps a game moving.
SOS earns 3 points from just 3 tiles — and it is a word few opponents will bother to challenge.

Round out your set with EROS (4), LOOS (4), LOSE (4), LOSS (4), LOST (4) — all built from common tiles.

Learning words through OS

Letter chunks like OS are how vocabulary compounds: learn the pattern once and every word built on it gets easier to recall and to spell. Read down this list and you will see the same rhythm repeat across lengths — that repetition is exactly what makes these words stick for spelling bees, ESL study and crossword pattern-matching alike.

More high-value letters

Find more specific words

Need to narrow by starting letter, ending letter or a Wordle pattern? Use the Word Finder.