pitty-pat

Adverbial pitty-pat has 2 senses

• pitty-pat(r = adv.all) pit-a-pat, pitter-patter, pitty-patty - as of footsteps; "he came running pit-a-pat down the hall"
• pitty-pat(r = adv.all) pit-a-pat, pitter-patter, pitty-patty - describing a rhythmic beating; "his heart went pit-a-pat"