What Does "himnae" (힘내) Mean in Korean?

This is a very common and versatile phrase used to offer encouragement. It's perfectly fine to say to friends, colleagues, or younger people. While polite, it might be slightly too direct or informal to use with a very senior elder or a complete stranger in a highly formal setting, where a more elaborate phrase like '힘내세요' (himnaeseyo) or '수고하세요' (sugohaseyo) might be preferred, but '힘내' is widely accepted. It conveys genuine care and support.