allnight

Allnight is a term used to describe duration through the entire night or the operation of activities during nighttime hours. As an adjective, it commonly denotes services, events, or facilities that run from evening until morning, such as all-night shops, transportation, or gatherings. As a concept, it can also refer to activities undertaken to stay awake through the night, an idea closely related to the notion of an all-nighter.

Spelling and usage vary. It can appear as all-night, all night, or allnight, with capitalization often indicating a title or brand when used as a proper noun. In commerce and nightlife, the phrase is widely used in advertising to signal 24-hour or late-hour availability. In culture and media, allnight or its variants appear as titles or branding for songs, films, and other works, reflecting themes of persistence, insomnia, or nocturnal activity. The term is also used in digital contexts to denote around-the-clock access or support, such as all-night customer service or all-night streaming.

In everyday language, discussions of the term distinguish between the general concept of staying awake through the night and formal or commercial uses of the phrase. Related concepts include all-nighter, meaning a single night-long session of work or study, and round-the-clock operations, a broader umbrella for 24/7 services.

See also: all-nighter; 24/7; overnight service; 24-hour store. Notes: because capitalization and branding vary, interpretation depends on context.