unwieldly

adjective, un·wield·i·er, un·wield·i·est.

1. not wieldy; wielded with difficulty; not readily handled or managed in use or action, as from size, shape, or weight; awkward; ungainly.

adjective

1. too heavy, large, or awkwardly shaped to be easily handled
2. ungainly; clumsy

adj.late 14c., “lacking strength,” from un- (1) “not” + Old English wielde “active, vigorous,” from Proto-Germanic *walth- “have power” (see wield). Meaning “moving ungracefully” is recorded from 1520s; in reference to weapons, “difficult to handle, awkward by virtue of size or shape” it is attested from 1540s.