Breadcrumb Home > Thesaurus > N Synonyms of nocturnal Find synonyms for: Adjective 1. nocturnal (vs. diurnal) usage: belonging to or active during the night; "nocturnal animals are active at night"; "nocturnal plants have flowers that open at night and close by day" 2. nocturnal usage: of or relating to or occurring in the night; "nocturnal darkness" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of nocturnal (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: turgid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language