- 1Extreme amusement, especially when expressed by laughter: his incredulous expression was the cause of much hilarityMore example sentences
- There'll probably be a lot of laughter and hilarity, because the owner of the restaurant is absolutely hilarious.
- The film veers in its perfectly-plotted course from absolute hilarity to extreme poignancy.
- Meg made a face that was between confusion and extreme hilarity.
late Middle English (in the sense 'cheerfulness'): from French hilarité, from Latin hilaritas 'cheerfulness, merriment', from hilaris (see hilarious).