threadbare Pronunciation: ⁄ ˈθrɛdbɛː ⁄ adjective · (of cloth, clothing, or soft furnishings) becoming thin and tattered with age: tatty rooms with threadbare carpets · (of a person, building, or room) poor or shabby in appearance: we huddle round a cassette deck in a threadbare rehearsal room · (of an argument, excuse, idea, etc.) used so often that it is no longer effective: the song was a tissue of threadbare clichés