Difference between a long while and for a long time in Korean

한참·오랫동안

a long while

한참a long while

한참 means "for a long while" or "for quite some time." Use it when an action continues longer than you expected, like waiting, talking, or walking. It often comes before the action word to show that something lasted a long time (한참).

How to say a long while
for a long time

오랫동안for a long time

오랫동안 means "for a long time." Use it when something continues for many minutes, hours, days, or years. It is common in everyday sentences like living somewhere, waiting, talking, or studying for a long time.

How to say for a long time

The difference

오랫동안 is a neutral way to say something lasted long. 한참 often feels like it went on for quite a while, sometimes longer than expected.