Definitions by The Nighttimer Society

nighttimer 

A person who enjoys living during the late night hours. A nighttimer isn't necessarily an insomniac; they simply prefer the time of day when it's dark and everyone else is asleep.

My roommate, the nighttimer, cooked a five-course meal at 3 am last night.

nighttimer by The Nighttimer Society September 16, 2011