Words Starting With ON

All 113 words in our dictionary that begin with ON, sorted by Scrabble score. Use them to open a word on the board or fill a crossword clue.

113 words · number = Scrabble score · sorted highest score first
onychophorans26 onychophoran25 onchocerciases23 onchocerciasis23 ontogenetically21 oncogenicity20 onomastically20 oncogenicities19 oncornaviruses19 onomatopoetic19 ontologically19 oneiromancy18 onomatopoeic18 oncornavirus17 oneiromancies17 onomasticians17 onomatologists17 onomatology17 onomatopoeias17 oncological16 oneirically16 onomastician16 onomatologies16 onomatologist16 onomatopoeia16 onyxes16 ongoingnesses15 oncidiums14 oncogeneses14 oncogenesis14 oncogenic14 oncologic14 oncologists14 oncology14 oncomings14 onionskins14 onlooking14 onomastics14 onslaughts14 ontically14 ontogenetic14 ontological14 onyx14 oncidium13 oncologies13 oncologist13 oncoming13 ondograms13 onerousnesses13 ongoingness13 onionskin13 onlookers13 onomastic13 onrushing13 onslaught13 oncogenes12 ondogram12 onerously12 onlooker12 ontogeneses12 ontogenesis12 ontogeny12 ontologists12 ontology12 onanistic11 oncogene11 onefold11 onerousness11 onrushes11 ontogenies11 ontologies11 ontologist11 onwards11 onanisms10 onboard10 oneself10 onshore10 onstream10 onward10 onanism9 oneiric9 onenesses9 onetime9 ongoing9 oniony9 onrush9 onagers8 onanists8 oneriest8 onery8 onstage8 onager7 onagri7 onanist7 oneness7 onerier7 onerous7 onium7 only7 onside7 ontic7 once6 onions6 onsets6 onuses6 onion5 onset5 ones4 onto4 onus4 one3 ons3 on2

Playing words that start with ON

Leading with ON lets you hook onto open columns and reach premium squares. Scan the high-scoring entries above first — they offer the best return when you have the tiles.

What the numbers say

The shape of this list: 113 entries between 2 and 15 letters long, peaking at 9 letters with 16 words. Five-letter picks number 5 and seven-letter picks 15. Nothing here outscores ONYCHOPHORANS — 26 points from 13 tiles on plain squares.

The five biggest scorers on the page: ONYCHOPHORANS (26), ONYCHOPHORAN (25), ONCHOCERCIASES (23), ONCHOCERCIASIS (23), ONTOGENETICALLY (21). ONTOGENETICALLY (15 letters) stretches furthest, while the list-wide average score sits near 12 points. Letter-wise, O is the workhorse — it appears in 113 of these words, ahead of N (113) and S (68).

Three easy picks from this list

Round out your set with ONTO (4), ONUS (4), ONION (5), ONSET (5), ONIONS (6) — all built from common tiles.

ON as a vocabulary shortcut

Letter chunks like ON 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 starting letters

Narrow it down

Combine a starting letter with a length or pattern in the Word Finder for exact matches.

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