Un*rea"son (?), n. [Pref. un- not + reason.]
Want of reason; unreasonableness; absurdity.
Abbot of Unreason. See Abbot of Misrule, under Abbot.
© Webster 1913.
Un*rea"son, v. t. [1st pref. un- + reason.]
To undo, disprove, or refute by reasoning.
[Obs.]
To unreason the equity of God's proceedings.
South.
© Webster 1913.