This is the 12501st most frequent Korean word.
대결이었다
"It was a confrontation."
Here, "대결이었다" implies a concluded event, specifically a difficult or intense face-off or competition.
그건 정말 치열한 대결이었다.
It was truly a fierce competition.
In this sentence, "대결이었다" refers to a competitive event involving teams, showcasing the past tense usage.
우리 팀의 대결이었다, 혜주는 승리했어.
It was our team's battle, and Hyeju won.
Here, "대결이었다" describes a completion of a concluding event or challenge.