Pitter patter is a term used to describe the sound of small or light footsteps. Antonyms of the term 'pitter patter' refer to sounds that are either heavier, louder, or non-existent. For instance, the word 'stomp' is an antonym of 'pitter patter,' as it describes the sound of heavy footsteps. Similarly, 'silence' is an antonym of 'pitter patter,' as it describes the absence of any sound at all. Other antonyms of 'pitter patter' include 'plod,' 'thud,' 'clomp,' 'stumble,' 'stagger,' 'shuffle,' among others. The choice of an antonym of 'pitter patter' majorly depends on the context in which it is used.