irrationable

Adjective

of an action or decision of a person or thing

(of an action or decision) Not rational. / (of a person or thing) Not possessing rationality.

Japanese Meaning

合理性がない、合理的でない / 理性が働かない、理性的でない

Her decision to quit college and travel the world on a whim seemed completely irrationable to her parents.

彼女が大学をやめて衝動的に世界を旅するという決断は、両親にはまったく非合理的に思えた。

Sense（1）

(of an action or decision) Not rational.

Sense（2）

(of a person or thing) Not possessing rationality.

Operations that are perfected in the economies of the irrationable animals, […]

more irrationable

（ comparative ）

most irrationable

（ superlative ）