* Pitter-patter: This is the most common and probably the most accurate, representing the gentle sound of raindrops hitting something soft.
* Drizzle: This word itself is onomatopoeic, representing the light, fine rain.
* Sizzle: This suggests a heavier rain, perhaps on hot pavement or metal.
* Splash: This word is more for individual raindrops hitting a surface, like a puddle.
* Drum: This refers to the rhythmic sound of heavy rain on a roof or other large surface.
The best word depends on the specific sound you want to evoke.