un·rea·son /ˌʌnˈrizṇ, ˈʌnˌ/
  無理性的,缺乏理性的,錯亂
  Un·rea·son n.  Want of reason; unreasonableness; absurdity.
  Abbot of Unreason. See Abbot of Misrule, under Abbot.
  Un·rea·son, v. t.  To undo, disprove, or refute by reasoning. [Obs.]
     To unreason the equity of God's proceedings.   --South.
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  unreason
       n : the state of being irrational; lacking powers of
           understanding [syn: irrationality]