몰두해요 · 몰두했어요 · 몰두할 거예요 · 몰두하세요
to be absorbed in, to devote oneself to, to concentrate on
Example
그는 연구에 몰두해서 밥 먹는 것도 잊었어요.
He was so absorbed in his research that he forgot to eat.
Word parts
몰 sink+두 head
Literally 'sink your head into it'.
Good to know
Pattern: N에 몰두하다, as in 일에 몰두하다 'bury oneself in work'.