reasonless

adjective
rea·​son·​less | \ˈrē-zᵊn-ləs \

Definition of reasonless 

1 : not having the faculty of reason a reasonless brute

2 : not reasoned : senseless reasonless hostility

3 : not based on or supported by reasons a reasonless accusation

Other Words from reasonless

reasonlessly adverb

First Known Use of reasonless

14th century, in the meaning defined at sense 1

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The first known use of reasonless was in the 14th century

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