WordNet sense 1 (expanding and contracting rhythmically as to the beating of the heart):

pulsating, pulsing

WordNet sense 2 (recurring with measured regularity):

rhythmic, rhythmical

WordNet sense 3 (the act of overcoming or outdoing):

whipping

WordNet sense 4 (the act of inflicting corporal punishment with repeated blows):

drubbing, licking, thrashing, lacing, trouncing, whacking