This is the 1214th most frequent Korean word.
적을
"적을" is the accusative form of "적" (enemy/opponent) in a sentence, meaning "enemy" or "opponent" as a direct object.
In this sentence, '적을' comes from the noun '적', meaning 'time' or 'occasion'. The phrase denotes recalling an experience from the past.
나는 친구와 여행한 적을 기억한다.
I remember the time I traveled with my friend.
Here, '적' refers to 'time' or 'chance', embodying the abstract concept of an event or opportunity to utilize.
적을 잘 활용하면 성공할 가능성이 높아진다.
If you utilize opportunities well, your chances of success increase.
In this context, '적' means 'enemy' and is used to indicate opposition or adversaries in a military sense.