adj. 25B6; adjective INCOMPETENT, unskilful, unskilled, inexpert, amateurish; clumsy, awkward, maladroit, unhandy, bungling, blundering; unproductive, unsuccessful, ineffectual, not up to scratch; informal cack-handed, ham-fisted, butterfingered, klutzy; Brit. informal all (fingers and) thumbs.
competent.