/ Thesaurus / O Synonyms of oenothera Find synonyms for: Noun1. Oenothera, genus Oenothera, dicot genus, magnoliopsid genususage: chiefly North American herbs with usually nocturnal flowersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: dissonant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language