Adjectives

(s)gawky, clumsy, clunky, ungainly, unwieldylacking grace in movement or posture“a gawky lad with long ungainly legs”, “clumsy fingers”, “what an ungainly creature a giraffe is”, “heaved his unwieldy figure out of his chair”
(s)awkward, bunglesome, clumsy, ungainlydifficult to handle or manage especially because of shape“an awkward bundle to carry”, “a load of bunglesome paraphernalia”, “clumsy wooden shoes”, “the cello, a rather ungainly instrument for a girl”