The term 'Bump on a Log' is an idiom used to describe someone who is inactive or lazy. The crossword solutions for this term are INERT (5 letters), KNUR (4 letters), WART (4 letters), NODE (4 letters), BURL (4 letters), KNAR (4 letters), and GNARL (5 letters). INERT is an adjective meaning lacking in energy or motion, KNUR is a noun meaning a knotty protuberance on the surface of a tree, WART is a noun meaning a small hard growth on the skin, NODE is a noun meaning a knot, protuberance, or knob, BURL is a noun meaning a rounded outgrowth on a tree trunk, KNAR is a noun meaning a gnarled root or branch, and GNARL is a verb meaning to make a snarling sound.