irrational has definitions from the field of mathematics
1
[ adjective ] not consistent with or using reason

Examples

"irrational fears" "irrational animals"

Used in print

(Brainard Cheney, "Christianity and the Tragic Vision-Ut...)

Then suddenly we found ourselves in the middle of another fight , an irrational , an indecent , an undeclared and immoral war with our strongest ( and some had thought noblest ) ally .

(Jesse W. Grimes and Wesley Allinsmith, "Compuls...)

The parent was asked to describe the child 's typical behavior in certain standard situations in which there was an opportunity to observe tendencies toward perfectionism in demands upon self and others , irrational conformity to rules , orderliness , punctuality , and need for certainty .

2
[ adjective ] (math) real but not expressible as the quotient of two integers

Examples

"irrational numbers"

Related terms

rational mathematics ratio

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