Oxford Dictionary English ill humour nounnoun BrE BrE//ˌɪl ˈhjuːmə(r)// ; NAmE NAmE//ˌɪl ˈhjuːmər// (especially US English ill humor) [uncountable, countable] (literary) Add to my wordlistjump to other resultsa bad mood opposite good humourCheck pronunciation: ill humour oxfordlearnersdictionaries.com