Thigh-slappers are those jokes or anecdotes that are so funny that you can't help but slap your thigh in laughter. However, it's not always appropriate to refer to them as such in certain settings. Here are some synonyms that you can use to describe thigh-slappers: knee-slappers, rib-ticklers, side-splitters, belly-laughs, gut-busters, chucklers, gigglers, and cacklers. These words can add variety to your vocabulary and help you avoid repeating the same term over and over again. Whether you're sharing a humorous story with friends or writing an article filled with witty quips, these synonyms will come in handy to describe the funniest moments.