Reason

"Reason" in Korean

리유

riyu

(that which causes: a cause)

원인

wonin

(that which causes: a cause)

이성

iseong

((the capacity of the human mind for) rational thinking)

이유

iyu

(that which causes: a cause)

이치

ichi

((the capacity of the human mind for) rational thinking)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.