Open English Wordnet
Adjectives
(s)cumbersome, cumbrousdifficult to handle or use especially because of size or weight“a cumbersome piece of machinery”, “cumbrous protective clothing”
(s)awkward, clumsy, cumbersome, inapt, inept, ill-chosennot 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?”