Breadcrumb Home > Thesaurus > F Synonyms of flatten Find synonyms for: Verb 1. flatten, shape, form usage: make flat or flatter; "flatten a road"; "flatten your stomach with these exercises" 2. flatten, flatten out, change shape, change form, deform usage: become flat or flatter; "The landscape flattened" 3. flatten, drop, change, alter, modify usage: lower the pitch of (musical notes) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of flatten (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: parallax Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language