cumbrous

difficult to use or operate especially because of size, weight, or design it took two people to haul the cumbrous machine into the garage Synonyms awkward, bunglesome, clumsy, clunky, cranky, cumbersome, ponderous, ungainly, unhandy, unwieldyRelated Words uncontrollable, unmanageable; bulky, dinosaurian, dinosauric, elephantine, heavy, hulking, massive; impracticable, impracticalNear Antonyms functional, practicable, practical, serviceable, usefulAntonyms handy