No longer current or in fashion; out-of-date. 2. Past the prime; faded or aged. [ French, past participle of passer, to pass, from Old French; see pass.] American. passé meaning, definition, what is passé: no longer fashionable. Learn more. no longer fashionable; out of date Meaning, pronunciation, example sentences, and more from Oxford 'minis are passé —the best skirts are knee-length'.