unwieldy

英 [ʌn'wiːldɪ] 美[ʌn'wildi]

1. 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"

2. 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"