Breadcrumb Home > Thesaurus > I Synonyms of irritant Find synonyms for: Noun 1. irritant, thorn, annoyance, bother, botheration, pain, infliction, pain in the neck, pain in the ass usage: something that causes irritation and annoyance; "he's a thorn in my flesh" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of irritant (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: calumny Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language