1. (a.) Burdensome or hindering, as a weight or drag; embarrassing; vexatious; cumbrous.

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

all thumbs awkward blunderheaded blundering boorish bulky bumbling bungling burdensome butterfingered careless clownish clumsy clumsy-fisted contrary crosswise cumbrous elephantine encumbering fingers all thumbs fumbling gauche gawkish gawky graceless ham-fisted ham-handed hampering heavy-handed hulking hulky impedimental impeding impeditive impractical inconvenient incumbent inelegant irksome left-hand left-handed loutish lubberly lumbering lumpish lumpy maladroit massive massy oafish onerous oppressive perverse ponderous sloppy stiff superincumbent tiresome uncouth ungainly ungraceful unhandy unmanageable unwieldy wearisome