• (a.) Rendering action or motion difficult or toilsome; serving to obstruct or hinder; burdensome; clogging. • (a.) Giving trouble; vexatious. Found on http://thinkexist.com/dictionary/meaning/cumbrous/
Cum'brous adjective 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 exte... Found on http://www.encyclo.co.uk/webster/C/202