Overnight Definition

ōvər-nīt
overnighted, overnighting, overnights
adjective
Done or going on during or through the night.
Webster's New World
Staying through the night.
An overnight guest.
Webster's New World
For use over a single night or for a short journey.
Overnight supplies.
American Heritage
Of or for the previous evening.
Webster's New World
Mailed for guaranteed delivery on the next day.
An overnight package.
American Heritage
Synonyms:
adverb
During or through the night.
Webster's New World
In or as if in the course of one night; suddenly.
Became a sensation overnight.
American Heritage
On or during the previous evening.
Webster's New World
Suddenly.
Webster's New World

Throughout the night.

Let it run overnight and we'll check on it in the morning.
Wiktionary
noun
An overnight stay, usually one away from home.
Webster's New World
Items delivered or completed overnight.
Have you looked at the overnights yet?
Wiktionary
verb
To spend the night, usually away from home.
Webster's New World
To send by mail or other courier for delivery the next day.
American Heritage
(US) To send something for delivery the next day. [from 20th c.]
We can overnight you the documents for signature.
Wiktionary

Other Word Forms of Overnight

Noun

Singular:
overnight
Plural:
overnights

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