This is the 15756th most frequent Korean word.
복수를
"복수를" means "revenge" or "vengeance" (in a grammatical form used within a sentence).
In this sentence, '복수를' is used as a noun meaning 'revenge,' serving as the grammatical object of the verb '결심했다' (decided).
나는 그의 배신에 대해 복수를 결심했다.
I decided to take revenge for his betrayal.
Here, '복수를' acts as the object of the verb '성공시켰다' (carried out successfully), emphasizing the action of achieving revenge.
그는 기막힌 계획으로 복수를 성공시켰다.
He successfully carried out his revenge with an ingenious plan.
In this example, '복수를' is part of the phrase '복수를 하다,' where '하다' (to do) combines with '복수를' to indicate the action of avenging.