me·di·o·cre ˌmēdēˈōkər/ adjective of only moderate quality; not very good. "a mediocre actor" synonyms: ordinary, average, middling, middle-of-the-road, uninspired, undistinguished, indifferent, unexceptional, unexciting, unremarkable, run-of-the-mill, pedestrian, prosaic, lackluster, forgettable, amateur, amateurish; More