/ Thesaurus / O Synonyms of one year Find synonyms for: Adjective1. annual (vs. biennial) (vs. perennial), one-yearusage: completing its life cycle within a year; "a border of annual flowering plants"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language