nightlong

American  

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

adjective

1. lasting all night.

   a nightlong snowfall.

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adverb

1. through the entire night.

   Volunteer sandbag crews worked nightlong to stem the floodwaters.

nightlong British  

/ ˈnaɪtˌlɒŋ /

adjective

1. throughout the night

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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

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

It was the first stop on Zohran Mamdani’s nightlong mayoral campaign blitz into the robust Muslim constituency that dots New York City.

From Slate • Apr. 5, 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

Instead, the Buckeyes had nine 3-pointers by the end of the third quarter — a milestone in the nearly nightlong misery for third-seeded L.S.U., which fell to No. 6 Ohio State, 79-64.

From New York Times • Mar. 21, 2022

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