Racquetball is a fast-paced indoor sport that involves hitting a small, rubber ball against a wall using a racquet. In addition to racquetball, there are several other terms that are used interchangeably to describe the sport. Some of the most common synonyms for racquetball include squash, handball, and paddleball. Squash and handball are similar sports that also involve hitting a ball against a wall with a racquet or hand. Paddleball is a variant of racquetball that involves using a larger paddle instead of a racquet. Whatever name you call it, racquetball is a fun and challenging sport that requires quick reflexes, agility, and strategic thinking.