Vocabulary
깨끗하다
clean, clear
Meaning
Free of dirt; for a place it may also imply no notable traces, depending on context.
Why this form?
텅 비다 — “to be completely empty”: means no people or objects; 깨끗하다 does not automatically mean empty.
Examples
그 층은 전부 깨끗했어요. — The whole floor was clean.
방이 깨끗해요. — The room is clean.