강퍅해요 · 강퍅했어요 · 강퍅한 (+noun)
obstinate and ill-tempered, cantankerous
Example
할아버지는 나이가 들수록 성격이 강퍅해지셨어요.
Grandpa became more cantankerous as he got older.
Word parts
강 firm+퍅 willful
Literally 'hard and willful' — refusing all advice.
Good to know
Pronounced [강퍄카다] — ㄱ and ㅎ merge into ㅋ.
Related words