dotty

Adjective

• intensely enthusiastic about or preoccupied with
  • crazy about cars and racing
    
  • he is potty about her
    

• informal or slang terms for mentally irregular
  • it used to drive my husband balmy
    

Related words

• Synonyms: 
  crazy , wild , gaga , balmy , barmy , bats , batty , bonkers , buggy , cracked , crackers , daft , fruity , haywire , kooky , kookie , loco , loony , loopy