reasonless

[ ree-zuh n-lis ]
/ ˈri zən lɪs /

adjective

not having any reason or sense: an utterly reasonless display of anger.
not having a natural capacity for reason.

Origin of reasonless

First recorded in 1350–1400, reasonless is from the Middle English word resonles. See reason, -less

Related forms

rea·son·less·ly, adverbrea·son·less·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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