clothier Syllabification: (cloth·ier)Pronunciation: /ˈklōT͟Hyər, -T͟Hēər/Definition of clothier noun a person or company that makes, sells, or deals in clothes or cloth. Origin: Middle English clother, from cloth. The change in the ending was due to association with -ierclothier in other Oxford dictionaries Definition of clothier in the British & World English dictionary