Antonyms for rational

Grammar : Adj

Spell : rash-uh-nl, rash-nl

Phonetic Transcription : ˈræʃ ə nl, ˈræʃ nl

Definition of rational

Origin : late 14c., "pertaining to reason;" mid-15c., "endowed with reason," from Old French racionel and directly from Latin rationalis "of or belonging to reason, reasonable," from ratio (genitive rationis) "reckoning, calculation, reason" (see ratio).

adj realistic; of sound mind

Example sentences :

He is one of the few foreigners who expect a rational answer.
Extract from : « Malbone » by Thomas Wentworth Higginson

Every rational luxury is to be procured in England by such an income.
Extract from : « Blackwood's Edinburgh Magazine, No. 327 » by Various

Times have changed, and now I enter Calais self-reliant and rational.
Extract from : « The Uncommercial Traveller » by Charles Dickens

The commander did what he could to bring me to a rational state of mind.
Extract from : « My Double Life » by Sarah Bernhardt

And don't trust him at any time; for when he seems most rational, he's wildest in his talk.
Extract from : « Life And Adventures Of Martin Chuzzlewit » by Charles Dickens

Be rational, and just, and calm, and tell me whose idea was that.'
Extract from : « Life And Adventures Of Martin Chuzzlewit » by Charles Dickens

Something he can learn from this man, something from that, and it is rational to learn and be taught.
Extract from : « Albert Durer » by T. Sturge Moore

The higher comes first, then the lower, first the human and rational, afterwards the animal.
Extract from : « The Republic » by Plato

And this, surely, must be the work of the calculating and rational principle in the soul?
Extract from : « The Republic » by Plato

Man is to bring himself back as far as he is able to the condition of a rational beast.
Extract from : « Theaetetus » by Plato

Synonyms for rational

Based on : Thesaurus.com - Gutenberg.org - Dictionary.com - Random House Unabridged Dictionary, © Random House, Inc. 2019