- not reasonable or rational; acting at variance with or contrary to reason; not guided by reason or sound judgment; irrational: an unreasonable person.
- not in accordance with practical realities, as attitude or behavior; inappropriate: His Bohemianism was an unreasonable way of life for one so rich.
- excessive, immoderate, or exorbitant; unconscionable: an unreasonable price; unreasonable demands.
- not having the faculty of reason.
Origin of unreasonable
Synonyms for unreasonableSee more synonyms for on Thesaurus.com
Examples from the Web for unreasonableness
Historical Examples of unreasonableness
But the unreasonableness of such a suspicion was patent, and Mr Verloc held his tongue.The Secret Agent
What I had done I had done as much to win Roxalanne to me as to win her from her own unreasonableness.Bardelys the Magnificent
It was Tom who pointed out the unreasonableness of emotion in making this demand.The Letter of the Contract
Her wishes had none of the unreasonableness of dying fancies.Rene Mauperin
Edmond de Goncourt and Jules de Goncourt
Thus he sat wondering, dismayed by the unreasonableness of women.The Dark Flower
- immoderate; excessiveunreasonable demands
- refusing to listen to reason
- lacking reason or judgment