There are many synonyms for the phrase "more hilarity," all of which convey a sense of increased amusement and laughter. One option is "greater merriment," which suggests an even greater degree of lightheartedness and joy. Another possible synonym is "increased levity," which emphasizes a carefree, joyous atmosphere. "Extra laughter" is also a viable option, invoking the idea of an abundance of mirth and humor. "Heightened jollity" is another choice, which suggests a more intense and enthusiastic sense of amusement. Whatever synonym one chooses, the message is clear: more hilarity equals more fun and laughter.