MONSIEUR Meaning of MONSIEUR in English [ mə'sjə: ]■ noun ( plural Messieurs mɛ'sjə: ) a title or form of address for a French-speaking man, corresponding to Mr or sir .OriginFr., from mon 'my' + sieur 'lord'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004