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.