Definitions of onst - OneLook Ethan Hayes Published Apr 07, 2026 Definitions from Wiktionary (onst)▸ adverb: (obsolete, dialect) onceonest, sometimes, wunst, once, somewhiles, once and away, eftsoones, of new, attonce, erst, more...▸ Words similar to onst▸ Usage examples for onst▸ Idioms related to onst▸ Civic discussion about onst (New!)▸ Words that often appear near onst▸ Rhymes of onst▸ Invented words related to onst
