cumbersome

adjectives

difficult to handle or use especially because of size or weight
"a cumbersome piece of machinery"; "cumbrous protective clothing"
cumbersome, cumbrous
is derived from
cumbersomeness
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?"
awkward, clumsy, cumbersome, ill-chosen, inapt, inept