Home › Words › I › irrugateirrugateirrugate means to wrinkle.EtymologyFirst attested in 1566; borrowed from Latin irrūgātus, perfect passive participle of irrūgō (“to wrinkle”), from rūga (“a wrinkle”), see -ate (verb-forming suffix).verbTo wrinkle.Definitions & examples from Wiktionary (CC BY-SA 3.0).