illogical

From il- +‎ logical.

illogical (comparative more illogical, superlative most illogical)

1. Contrary to logic; lacking sense or sound reasoning.

   Synonyms: absurd, irrational, unreasoning, unsound

   Antonym: logical

   I received an illogical reply and that left me standing there feeling confused.

   • 1967 November 10, “Metamorphosis”, in Star Trek, season 2, episode 9, spoken by Mr. Spock (Leonard Nimoy):

     Your highly emotional reaction is most illogical.

   • 1979, “The Logical Song”, in Roger Hodgson (lyrics), Breakfast in America, performed by Supertramp:

     'Cause I was feeling so illogical, d-d-d-igital

• illogic