Belly laughs are the kind of laughs that are contagious and heartfelt. They are the laughs that bring you to tears and make your stomach hurt. If you're looking for synonyms for "belly laugh", you may want to try "guffaw". This word denotes a loud and unrestrained laugh that is often accompanied by a snort. Another option is "chortle", which is a chuckle mixed with a snort. "Roaring laugh" is a great way to describe a belly laugh that is really loud and boisterous. Alternatively, you could use "uproarious laughter" to describe the kind of laughter that makes everyone stop and listen. Whatever words you choose, remember that a belly laugh is always a good sign that you're having a great time.