Hilarity is a word that is often used to describe an atmosphere of great amusement and joy. However, there are many other synonyms that can be used to convey the same sentiment. Words like mirth, jollity, glee, and revelry can all be used to describe a state of hilarity. Ruefulness, perplexity, and melancholy all represent the opposite of hilarity. When looking to convey a sense of joviality and happiness, hilarity is just one of many options in the English language. It is important to select the right synonym in order to properly convey the intended meaning and create the desired atmosphere in any given situation.