UNREASON

irrationality, unreason

(noun) the state of being irrational; lacking powers of understanding

Source: WordNet® 3.1

---

Etymology

Noun

unreason (usually uncountable, plural unreasons)

Lack of reason or rationality; unreasonableness; irrationality.

Nonsense; folly; absurdity.

Verb

unreason (third-person singular simple present unreasons, present participle unreasoning, simple past and past participle unreasoned)

(transitive, rare) To prove to be unreasonable; disprove by argument.

(rare) To apply false logic or think without logic.

(rare) To make unreasonable; to deprive of reason.

Source: Wiktionary

---

Un*rea"son, n. Etym: [Pref. un- not + reason.]

Definition: Want of reason; unreasonableness; absurdity. Abbot of Unreason. See Abbot of Misrule, under Abbot.

Un*rea"son, v. t. Etym: [1st pref. un- + reason.]

Definition: To undo, disprove, or refute by reasoning. [Obs.] To unreason the equity of God's proceedings. South.

Source: Webster’s Unabridged Dictionary 1913 Edition

---