delirium
noun [ U ] uk/dɪˈlɪr.i.əm/ us/dɪˈlɪr.i.əm/
（因发烧或精神错乱而）神志不清;语无伦次
a state of being unable to think or speak clearly because of fever or mental confusion
fever accompanied by delirium 高烧伴有神志不清
狂喜；亢奋
a state of extreme excitement or happiness
I've never seen such delirium at a football game before. 我以前从未见过场面如此热烈的足球比赛。