This is the 19348th most frequent Korean word.
알았을
"알았을" is a conjugated form meaning "would have known" or "might have understood" in a hypothetical or past conditional context.
The word '알았을' is used here as the past subjunctive form of '알다', illustrating recognition or realization occurring before another action.
제가 알았을 때, 이미 너무 늦었었어요.
When I understood, it was already too late.
In this sentence, '알았을' indicates a fact understood by the subject (he) at a previous moment in time.
그가 알았을 사실이 정말 놀라웠습니다.
The fact that he comprehended was truly surprising.
Here, '알았을' conveys a hypothetical past recognition scenario to evaluate its plausibility.