천착해요 · 천착했어요 · 천착할 거예요 · 천착하세요
to delve into, to dig deeply into (a subject)
Example
그 작가는 평생 인간의 고독에 천착했습니다.
The writer delved into human loneliness all his life.
Word parts
천 pierce+착 chisel
Literally 'pierce and chisel' — boring deep into a subject.