Breadcrumb Home > Thesaurus > D Synonyms of decelerate Find synonyms for: Verb 1. decelerate, slow, slow down, slow up, retard, decrease, diminish, lessen, fall usage: lose velocity; move more slowly; "The car decelerated" 2. decelerate, slow down, change, alter, modify usage: reduce the speed of; "He slowed down the car" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of decelerate (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: spelunk Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language