unwieldy

Difficult to carry or manage because of size, shape, weight, or complexity.

Movable or moving with difficulty; unmanageable from size, shape, or weight; lacking pliability: as, an unwieldy hulk; an unwieldy rock.

Not easily wielded or carried; unmanageable; bulky; ponderous.

lacking strength; weak

ungraceful in movement

difficult to carry, handle, manage or operate because of its size, weight, shape or complexity

badly managed or operated

difficult to work or manipulate

difficult to use or handle or manage because of size or weight or shape

lacking grace in movement or posture