kook
🇺🇸
/kuːk/
🇬🇧
/kuːk/
someone who does unusual or eccentric things
The lifeguard warned us to stay away from the kook who was trying to ride the waves on a homemade surfboard.
救生員警告我們遠離那個試圖用自製衝浪板衝浪的怪人。