Definition of dotty adjective from the Oxford Advanced Learner's Dictionary

     

    dotty

     adjective
    adjective
    BrE BrE//ˈdɒti//
     
    ; NAmE NAmE//ˈdɑːti//
     
    (dottier, dottiest)(old-fashioned, British English, informal) Describing strange traits
     
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  1. 1slightly crazy or silly synonym eccentric See related entries: Describing strange traits
  2. 2dotty about somebody/something having romantic feelings for somebody; being enthusiastic about something He’s dotty about you.
  3. Word Origin late 19th cent.: perhaps from obsolete dote ‘simpleton, fool’, apparently from Dutch dote ‘folly’.