58 synonyms for clumsy such as crass, accident-prone, awkward, awkward, and boorish. Clumsy is an adjective, and its antonyms are graceful and skillful.
Accident-prone, all fingers and thumbs, awkward, blundering, bumbling, bungling, butterfingered, cack-handed, cloddish, fumbling, gangling, gauche, gawky, graceless, ham-fisted, ham-handed, hulking, inelegant, inept, inexpert, klutzy, like a bull in a china shop, lumbering, maladroit, uncoordinated, ungainly, ungraceful, unhandy, unskilful, and with two left feet.
Awkward, bulky, cumbersome, heavy, hulking, solid, unmanageable, unmanoeuvrable, and unwieldy.
Awkward, boorish, crass, crude, gauche, graceless, ill-judged, impolitic, inconsiderate, indelicate, injudicious, insensitive, tactless, thoughtless, uncouth, undiplomatic, unpolished, and unsubtle.