This is the 11487th most frequent Korean word.
끌어올렸고
"끌어올렸고" means "lifted up" or "raised up."
The word 끌어올렸고 is used metaphorically to express raising or increasing an abstract quality—confidence.
그는 자신감을 끌어올렸고 이제 뭐든 할 수 있을 것 같다.
He boosted his confidence and now seems capable of anything.
Here, 끌어올렸고 describes the enhancement of a tangible, practical aspect—performance of a device.
우리는 기계의 성능을 끌어올렸고 더 효과적인 결과를 얻었다.
We improved the machine's performance and achieved more effective results.
In this sentence, 끌어올렸고 signifies elevating an emotional or mental state—morale.