The phrase "went pit a pat" refers to the sound of quick, hurried footsteps. Antonyms for this phrase could include "ambled," "meandered," or "sauntered," which would suggest a more leisurely or relaxed pace. Other antonyms may include "strolled," "wandered," or "moseyed," all of which imply a slower, more deliberate movement. Additionally, antonyms such as "lingered," "loitered," or "lingered," suggest a reluctance to move or a lack of urgency. Whatever the choice of antonym, it is clear that "went pit a pat" represents a particular type of movement, one that is characterized by speed, purpose, and perhaps even anxiety or excitement.