wacko

怪人、瘋子口語，貶義

Some wacko has been leaving strange notes on my car.

有個怪人一直在我車上留下奇怪的字條。

古怪的、瘋瘋癲癲的口語

He came up with another wacko plan to get rich quick.

他又想出一個古怪的快速致富計畫。