Breadcrumb Home > Thesaurus > U Synonyms of underachieve Find synonyms for: Verb 1. underachieve, underperform, do, perform usage: perform less well or with less success than expected; "John consistently underachieves, although he is very able"; "My stocks underperformed last year" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of underachieve (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