pitter-patter
1. [ verb ] make light, rapid and repeated sounds, as of rain
Synonyms: patter
Related terms: go
2. [ verb ] (meteorology) rain gently
Synonyms: spit spatter patter sprinkle
Examples:

"It has only sprinkled, but the roads are slick."

Related terms: rain scattering
3. [ adverb ] describing a rhythmic beating
Synonyms: pitty-patty pitty-pat pit-a-pat
Examples:

"his heart went pit-a-pat"

4. [ adverb ] as of footsteps
Synonyms: pitty-patty pitty-pat pit-a-pat
Examples:

"he came running pit-a-pat down the hall"

5. [ noun ] a series of rapid tapping sounds
Examples:

"she missed the pitter-patter of little feet around the house"

Related terms: pat patter