dotty
adjective uk/ˈdɒt.i/ us/ˈdɑː.t̬i/
UK informal古怪的;精神不正常的
slightly strange or mentally ill
a dotty old woman 古怪的老女人
be dotty about someone/somethingUK old-fashioned 对…痴迷，热衷于
to like or love someone or something very much or be very interested in him, her, or it
Jean's absolutely dotty about cats. 琼特别喜欢猫。