Breadcrumb Home > Thesaurus > B Synonyms of brighten Find synonyms for: Verb 1. brighten, lighten up, lighten, change, alter, modify usage: make lighter or brighter; "The paint will brighten the room" 2. clear up, clear, light up, brighten usage: become clear; "The sky cleared after the storm" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of brighten (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: hagiography Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language