Dictionary.com
Thesaurus.com

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”; 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

As they roamed the streets, the protesters set off small fires that would soon draw in the police, in what has become a nightlong game of cat-and-mouse.

From New York Times

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

Appearing in fitted tops and mini skirts after nightlong partying, Naomi is, well, the black sheep in more ways than the most obvious racial one.

From New York Times

But tonight the wind is blowing out, and he just didn’t give them any swings all nightlong.”

From Washington Post