a night owl
night owl
A person who prefers to be awake late at night. In my younger days, I was quite a night owl and would often stay up until sunrise.
a night owl
If you call someone a night owl, you mean that they regularly stay up late at night. Night owls can even order a 3am steak at the 24-hour Horizons Court Hotel. Joe is a night owl whereas I'm more of an early bird.