資料來源 : Webster's Revised Unabridged Dictionary (1913)

Cumbersome \Cum"ber*some\ (k?m"b?r-s?m), a.
   1. Burdensome or hindering, as a weight or drag;
      embarrassing; vexatious; cumbrous.

            To perform a cumbersome obedience.    --Sir. P.
                                                  Sidney.

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

            He holds them in utter contempt, as lumbering,
            cumbersome, circuitous.               --I. Taylor.
      -- {Cum"ber*some*ly}, adv. -- {Cum"ber*some*ness},n.

資料來源 : WordNet®

cumbersomeness
     n : trouble in carrying or managing caused by bulk or shape;
         "the movers cursed the unwieldiness of the big piano"
         [syn: {awkwardness}, {unwieldiness}]