Not reasonable or agreeable to reason; irrational.Exceeding the bounds of reason; beyond what is reasonable or moderate; exorbitant; immoderate: as, an unreasonable price.Not endowed with reason; irrational.Not listening to or acting according to reason; not guided by reason; not influenced by reason.Inconvenient.Synonyms Absurd, Silly, Foolish, etc. (see absurd), obstinate, wrong-headed, extravagant, unfair, unjust, extortionate.