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nightlong

American  
[nahyt-lawng, -long, nahyt-lawng, -long] / ˈnaɪtˌlɔŋ, -ˌlɒŋ, ˈnaɪtˈlɔŋ, -ˈlɒŋ /

adjective

  1. lasting all night.

    a nightlong snowfall.


adverb

  1. through the entire night.

    Volunteer sandbag crews worked nightlong to stem the floodwaters.

nightlong British  
/ ˈnaɪtˌlɒŋ /

adjective

  1. throughout the night

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of nightlong

First recorded before 1000; Middle English; Old English nihtlang (adverb) “for the space of a night”; see night, long 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Swathed in red and white, they crammed into one corner of the century-old stadium for what amounted to a nightlong celebration.

From Los Angeles Times • Sep. 3, 2025

Known as the Argus Array Pathfinder, it will register changes in the stars second by second, essentially making a nightlong celestial movie.

From Science Magazine • Aug. 24, 2022

A classic example of vaccine misinformation and how it spreads, Minaj’s post set off a nightlong round of ridicule.

From Slate • Sep. 14, 2021

A nightlong search for his missing son ends in the woods: ‘He’s gone. I found him.’

From Washington Post • Dec. 13, 2017

Now night had come on, rough, with no moon, but a nightlong downpour setting in, the rainwind blowing hard from the west.

From "The Odyssey" by Homer

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