unwieldy
adjective
[ ʌnˈwiːldi ]
• (of an object) difficult to move because of its size, shape, or weight.
• "huge, unwieldy arc lamps"
Similar:
cumbersome,
unmanageable,
unhandy,
unmanoeuvrable,
awkward,
difficult,
clumsy,
ungainly,
massive,
heavy,
hefty,
bulky,
weighty,
ponderous,
hulking,
clunky,
Origin:
late Middle English (in the sense ‘lacking strength, infirm’): from un-1 ‘not’ + wieldy (in the obsolete sense ‘active’).