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

---

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

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

That would begin my nightlong parasocial relationship with MTV that wouldn’t end until ’120 Minutes’ was done at 2.

From Los Angeles Times • May 13, 2023

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

Saiyub ignored the numerous calls he was getting from friends and family in the village and stayed in silence beside his friend throughout the nightlong journey.

From New York Times • Jul. 31, 2020

Like all the young people who entered that year, she discovered the appeal of nightlong gatherings in cafes, talking about the necessary changes in the world and infecting each other with the passion of ideas.

From "The House of the Spirits: A Novel" by Isabel Allende