#1 cumbersome s. [cumbrous] difficult to handle or use especially because of size or weight; "a cumbersome piece of machinery"; "cumbrous protective clothing". wn
#2 cumbersome s. [awkward, clumsy, inapt, inept, ill-chosen] 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?". wn
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