List of 5-letter words beginning with

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There are 14 five-letter words beginning with ON

ONCER	• oncer n. (Informal, historical) A one-pound note. • oncer n. (Poetic) A person who does something once. • oncer n. (Informal) A single sexual encounter between two individuals, a one-night stand.
ONCES	• onces n. Plural of once. • ONCE n. one time.
ONCET	• oncet adv. (Southern US, South Midland US, uncommon) Once. • ONCET adv. (Southern US dialect) once.
ONCUS	• ONCUS adj. (Australian slang) disordered, bad, also ONKUS.
ONELY	• onely adv. Obsolete spelling of only. • ONELY adv. (Spenser) only.
ONERS	• oners n. Plural of oner. • ONER n. something unique.
ONERY	• onery adj. (US, particularly Southern US) Pronunciation spelling of ornery. • ONERY adj. (colloquial) cantankerous, also ORNERY.
ONION	• onion n. A monocotyledonous plant (Allium cepa), allied to garlic, used as vegetable and spice. • onion n. The bulb of such a plant. • onion n. (Uncountable) The genus Allium as a whole.
ONIUM	• onium n. (Chemistry) any cation derived by the addition of a proton to the hydride of any element of the nitrogen… • onium n. (Chemistry) any organic derivative of these compounds. • onium n. (Physics) the bound pair of a particle and its antiparticle.
ONKUS	• onkus adj. (Australia, New Zealand, slang, dated) Inferior; unpleasant; unacceptably bad. • onkus adj. (New Zealand, slang, rare, obsolete) Good; acceptable; okay. • ONKUS adj. (Australian slang) disordered, bad, also ONCUS.
ONLAY	• onlay v. (Transitive, literary) To lay or place something on a surface. • onlay n. (Often attributive) A material placed such that it overlaps another. • ONLAY n. an artificial veneer for a tooth.
ONNED	• onned v. Simple past tense and past participle of on. • ON v. to go on.
ONSET	• onset n. (Archaic) An attack; an assault especially of an army. • onset n. (Medicine) The initial phase of a disease or condition, in which symptoms first become apparent. • onset n. (Phonology) The initial portion of a syllable, preceding the syllable nucleus.
ONTIC	• ontic adj. Ontological. • ontic adj. Pertaining to being generally, as opposed to some theory of it (which would be ontology). • ONTIC adj. having real existence.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the WikWik.org and 1Word.ws.

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English Wiktionary: 83 words
Scrabble in French: 8 words
Scrabble in Spanish: 14 words
Scrabble in Italian: 25 words
Scrabble in German: 3 words
Scrabble in Romanian: 5 words

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