fashionably adv. + Add to list US //ˈfæʃənəbɫi// UK //fˈæʃənəbli// fash·ion·ably AntonymsEtymology Antonyms unfashionablyOrigin From fashionable + -ly. Idioms1 entry01fashionably lateArriving behind time to an event which does not normally require one to be punctual.