When it comes to synonyms for the word "ping-pong ball," there are several options to choose from. One of the most common synonyms is "table tennis ball," which is frequently used in official tournaments and competitions. Another option is "whiffle ball," which is a type of plastic ball commonly used in games. Some other alternatives include "paddle ball" and "ball-in-a-cup," both of which are games that involve similar objects. While each of these synonyms is slightly different from the original "ping-pong ball," they all generally refer to a small, lightweight ball that is used for games and activities.