Need antonyms for most rational ? Here's a list of opposite words from our thesaurus that you can use instead.
Opposite of superlative for based on, or in accordance with, reason or logic
“Overall, the moral excuses for war we have been fed are at best inconsistent, illogical and hypocritical.”
Opposite of superlative for able to think sensibly or logically
“Ferran and Chien Chi's works in particular present ethical challenges, regarding ethical treatment of the mentally unsound .”
Opposite of superlative for endowed with the capacity to reason
“Ideologically, they turn in on themselves, becoming more regressive and irrational in their justifications and often more cruel in their political actions.”