A well-worn expression, remark, or idea has been used so often that it no longer seems to have much meaning or to be interesting. To use a well-worn cliche, it is packed with information. = hackneyed
repeated too often; overfamiliar through overuse; "bromidic sermons"; "his remarks were trite and commonplace"; "hackneyed phrases"; "a stock answer"; "repeating threadbare jokes"; "parroting some timeworn axiom"; "the trite metaphor `hard as nails'"