Burdensome or hindering, as a weight or drag; embarrassing; vexatious; cumbrous.

difficult to handle or use especially because of size or weight; "a cumbersome piece of machinery"; "cumbrous protective clothing"

not elegant or graceful in expression; "an awkward prose style"; "a clumsy apology"; "his cumbersome writing style"; "if the rumor is true, can anything be more inept than to repeat it now?"

Not easily managed; as, a cumbersome contrivance or machine.