This is the 4292nd most frequent Korean word.
추정했다
"추정했다" means "estimated" or "assumed."
Used here to indicate making an assumption about a past event based on reasoning.
그는 사건 당시에 그곳에 있었을 것이라고 추정했다.
He assumed that he was there at the time of the incident.
In this sentence, it indicates forming a belief or supposition about a possibility or theory.
사람들은 UFO가 하늘에 나타났다는 이야기를 듣고 외계 생명체의 존재를 추정했다.
People assumed the existence of extraterrestrial life upon hearing stories of a UFO appearing in the sky.
Used here to signify logically deducing a conclusion from given data.