철저히 + verb: 철저히 준비하다, 철저히 조사하다
thoroughly, completely, strictly
Example
면접을 위해 철저히 준비했어요.
I prepared thoroughly for the interview.
Word parts
철 penetrate+저 bottom
Literally 'penetrating to the bottom'.
Good to know
Pronounced [철쩌히] — tensing after ㄹ in Sino-Korean words.
Related words