This is the 11075th most frequent Korean word.
기다리고만
"Just waiting."
Here, '기다리고만' emphasizes that the action of waiting is the sole activity being performed, without engaging in other actions.
그는 누군가를 기다리고만 있었어요.
He was just waiting for someone.
In this case, '기다리고만' highlights that the students were entirely focused on the act of waiting and not doing anything else.
학생들이 발표를 기다리고만 있었습니다.
The students were simply waiting for the presentation.
This sentence uses '기다리고만' to contrast a passive waiting attitude with the need for proactive behavior.