cumbersome
adjective
[ ˈkʌmbəs(ə)m ]
• large or heavy and therefore difficult to carry or use; unwieldy.
• "cumbersome diving suits"
Similar:
unwieldy,
unmanageable,
awkward,
clumsy,
ungainly,
inconvenient,
incommodious,
bulky,
large,
heavy,
hefty,
weighty,
burdensome,
hulking,
clunky,
cumbrous,
unhandy,
lumbersome,
Origin:
late Middle English (in the sense ‘difficult to get through’): from cumber + -some1.