Home › Words › I › irritatorirritatorirritator · noun — one who or that which irritates.Definition from Wiktionary (CC BY-SA 3.0).Among words judged in Lexicurio's Arena, irritator ranks #36,424 of 42,862 for Qualifying.EtymologyFrom irritate + -or.nounOne who or that which irritates.Definitions & examples from Wiktionary (CC BY-SA 3.0).