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

  

illogical

 adjective
adjective
BrE BrE//ɪˈlɒdʒɪkl//
 
; NAmE NAmE//ɪˈlɑːdʒɪkl//
 
 
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not sensible or thought out in a logical way illogical behaviour/arguments She has an illogical fear of insects. From all this evidence he drew a strange and illogical conclusion. opposite logical
See the Oxford Advanced American Dictionary entry: illogical