doolally
/duːˈlælɪ/adjective
1- informal temporarily deranged or feeble-minded〈非正式〉临时性精神错乱的; 低能的：
Uncle's gone doolally again.
叔叔又在发疯了。
1.1
- transported with excitement or pleasure异常激动的; 欣喜若狂的：
a return on capital employed that the City would go doolally over.
整个城市会为之变得疯狂的所用资本的丰厚回报。
词源
early 20th cent.: originally doolally tap, Indian army slang， from Deolali (the name of a town near Bombay)+Urdu tap 'fever'.