イラショナル

noun

irrational

A direct loanword used in contexts like psychology, economics, or everyday speech to describe illogical behavior or thinking.

• 彼かれの行こう動どうはイラショナルだ。

  His behavior is irrational.

• イラショナルな考かんがえ方かたをやめよう。

  Let's stop irrational thinking.