Breadcrumb Home > Dictionary > Index G grumpy: Meaning and Definition of Find definitions for: grump•y Pronunciation: (grum'pē), [key] — grump•i•er, grump•i•est. surly or ill-tempered; discontentedly or sullenly irritable; grouchy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: grumpy (Thesaurus) grumphie Grundy 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: pernicious Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language