dotty
adjective(comparative dottier, superlative dottiest)
(British English, old-fashioned, informal)slightly crazy or silly 疯疯癫癫的；半痴的；低能的 - dotty about somebody/something
having romantic feelings for somebody; being enthusiastic about something 迷恋；充满热情；着迷 He’s dotty about you. 他对你很着迷。
Word Originlate 19th cent.: perhaps from obsolete dote ‘simpleton, fool’, apparently from Dutch dote ‘folly’.