1. To combine (figures) to form a sum. Also used with up: add (up), cast, sum (up), tot2 (up), total, totalize. SeeINCREASE. 2. To move rhythmically to music, using patterns of steps or gestures: dance, step. Slang :hoof. Idioms: cut a rug, foot it, trip the light fantastic. SeeREPETITION, WORK. 3. To go on foot: ambulate, pace, step, tread, walk. Slang :hoof. Idioms: foot it. SeeMOVE.