This is the 13290th most frequent Korean word.
들었어
"Heard" (past tense of "hear").
The word '들었어' here is used to mean 'heard' in the context of receiving auditory information.
어제 그 소식을 들었어.
I heard that news yesterday.
In this sentence, '들었어' is used to refer to listening to music or audible media.
라디오에서 그 노래를 들었어.
I heard that song on the radio.
Here, '들었어' indicates learning news or information through communication.