adjectives
difficult to use or handle or manage because of size or weight or shape
"we set about towing the unwieldy structure into the shelter"; "almost dropped the unwieldy parcel"
difficult to work or manipulate
"unwieldy rules and regulations"
is similar to
not practical; not workable or not given to practical matters
"refloating the ship proved impractical because of the expense"; "he is intelligent but too impractical for commercial work"; "an impractical solution"
lacking 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"