5-letter words starting with on
- on at — nagging
- on to — so as to be or remain supported by or suspended from: Put your package down on the table; Hang your coat on the hook.
- onate — Juan de [hwahn de] /ʰwɑn dɛ/ (Show IPA), 1550?–1624, Spanish explorer who colonized New Mexico.
- oncer — at one time in the past; formerly: I was a farmer once; a once powerful nation.
- oncet — (Southern US, South Midland US, uncommon) Once.
- onco- — denoting a tumour
- one's — possessive
- onega — Lake, a lake in the NW Russian Federation in Europe: second largest lake in Europe. 3764 sq. mi. (9750 sq. km).
- onely — Obsolete spelling of only.
- oners — Plural form of oner.
- onery — (US, particularly, Southern US) eye dialect ornery.
- onest — being or amounting to a single unit or individual or entire thing, item, or object rather than two or more; a single: one woman; one nation; one piece of cake.
- onion — a plant, Allium cepa, of the amaryllis family, having an edible, succulent, pungent bulb.
- onium — (chemistry) any cation derived by the addition of a proton to the hydride of any element of the nitrogen, chalcogen or halogen families.
- onkus — unpleasant, unattractive, or unacceptable; bad.
- onlap — the advance of a sea beyond its former shore.
- onlay — an overlay, especially one in relief.
- onsen — A hot spring in Japan, often with accompanying bathing facilities.
- onset — a beginning or start: the onset of winter.
- ontic — possessing the character of real rather than phenomenal existence; noumenal.
- onto- — existence or being
- onyon — Obsolete spelling of onion.
On this page, we collect all 5-letter words starting with ON. It’s easy to find right word with a certain length. It is the easiest way to find 5-letter word that beginning with ON to use in Scrabble or Crossword puzzles.