Korean phrase
글쎄요. keul sse yo
Meaning
Well
When to use it
It is a polite way to express hesitation or uncertainty. It can soften a reply when a definite answer is not ready yet.
Example dialogue
다음 달 회식, 언제로 할까요? ta eum tal hoe sik eon je ro hal kka yo
When should we have next month's company dinner?
글쎄요, 아직 날짜를 확정하기 어려워요. keul sse yo a jik nal jja reul hwak jjeong ha gi eo ryeo wo yo
Well, it's still difficult to settle on a date.