Word Study
unreason
CIDE DICTIONARY
unreason, n. [Pref. un- not + reason.].
Want of reason; unreasonableness; absurdity. [1913 Webster]
unreason, v. t. [1st pref. un- + reason.].
To undo, disprove, or refute by reasoning. [1913 Webster]
"To unreason the equity of God's proceedings." [1913 Webster]
OXFORD DICTIONARY
unreason, n. lack of reasonable thought or action.
Etymology
ME, = injustice, f. UN-(1) + REASON
THESAURUS
unreason
callowness, childishness, immaturity, imprudence, inadvisability, inattention, inconsideration, indiscreetness, indiscretion, inexpedience, injudiciousness, irrationality, pompousness, puerility, reasonlessness, recklessness, senselessness, stuffiness, thoughtlessness, unintelligence, unreasonableness, unsensibleness, unsoundness, unthoughtfulness, unwisdom, unwiseness, witlessnessFor further exploring for "unreason" in Webster Dictionary Online