Cŭm′brŏus, a.

a. 1. Rendering action or motion difficult or toilsome; serving to obstruct or hinder; burdensome; clogging. He sunk beneath the cumbrous weight. Swift. That cumbrous and unwieldy style which disfigures English composition so extensively. De Quincey. 2. Giving trouble; vexatious. “A cloud of cumbrous gnats.” Spenser.