열악해요 · 열악했어요 · 열악한 (+noun)
poor, inferior, harsh (conditions)
Example
그 공장은 근무 환경이 열악합니다.
That factory has poor working conditions.
Word parts
열 inferior+악 bad
Literally 'inferior and bad'.
Good to know
Pronounced [여라카다]; almost always about conditions: 열악한 환경, 열악한 조건.
Related words