혹서가 · 혹서를
intense heat, scorching summer heat
Example
올여름 혹서 때문에 전기 사용량이 크게 늘었습니다.
Electricity use rose sharply because of this summer's intense heat.
Word parts
혹 severe+서 heat
Literally 'cruel heat'.
Good to know
혹서 is a written, formal word; in daily speech 폭염 or 무더위 is far more common.
Related words