OVERNIGHT definition: for or during the night. See examples of overnight used in a sentence.

The meaning of OVERNIGHT is on the evening before. How to use overnight in a sentence.

You can stay overnight if you want to. Don't forget to pack an overnight bag (= a bag for things that you need when you stay away from home for a night).

If something happens overnight, it happens throughout the night or at some point during the night. The weather remained calm overnight. The decision was reached overnight. Overnight is also an adjective.

1. During or for the length of the night: Let the meat marinate overnight. 2. In or as if in the course of one night; suddenly: became a sensation overnight.

You can use overnight as an adverb or adjective literally meaning "during the night" — like an overnight airplane flight or a guest who stays overnight on your couch. You can also use it figuratively, to mean …

for or during the night: We'll stay overnight and leave early tomorrow morning. suddenly: New suburbs sprang up overnight. on the previous evening: Preparations were made overnight. done, made, …

Nov 5, 2025 · Inherited from Middle English overnyght, from Old English ofer niht (“through the night, overnight”), equivalent to over +‎ night. Verbal use (late 19th c.) may have been influenced by …

Overnight and overboard should both be spelled as a single word. So you never have to worry about going overboard with overnight —there is exactly one situation where over night is correct, and …

Let’s start by clearing up any confusion: overnight is the correct spelling so long as you mean to describe something that took place “all through the night.” In most cases, over night (two words) …