What does allnighter mean?
An allnighter is a night spent entirely without sleep, usually in order to study for an examination, complete an assignment, or finish work under time pressure. The word functions as an informal noun in both British and American English, and it is most closely associated with students, though professionals facing deadlines use it as well. It almost always appears with the verb 'pull', giving the familiar phrase 'to pull an allnighter', which suggests the effortful, draining nature of the experience. The term carries connotations of urgency, dedication, and often exhaustion; staying up all night is generally seen as a last resort rather than good practice, since sleep deprivation impairs memory and concentration. Related expressions include the adjective 'all-night', describing things that operate through the night, such as an all-night diner. Despite its informal tone, the word is widely understood and frequently used in everyday speech, journalism, and campus culture.
nounAn allnighter is a night during which a person stays awake until morning, typically to study, work, or finish a task. It is an informal term most often associated with students preparing for exams or meeting deadlines.
- A night spent awake until morning, usually studying or working to meet a deadline.
"She pulled an allnighter to finish her dissertation before the deadline."
"He pulled an allnighter cramming for his final exams."
"The developers worked an allnighter to get the software launch ready on time."
Standard pluralization applies; used when referring to multiple instances of staying up all night.
"During finals week, he survived on coffee and three allnighters."
The word 'pull' does a lot of heavy lifting here — you don't 'make' or 'take' an allnighter, you 'pull' one, as if dragging yourself bodily toward sunrise.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of allnighter
The word allnighter is a modern English formation built transparently from the compound 'all-night', which itself derives from the Old English roots of 'all' and 'night'. It follows the pattern of agent-like nouns ending in '-er' that denote a person or instance associated with an activity, much like 'one-nighter'. The compound 'all-night' has been used adjectivally in English for centuries to describe events or establishments operating through the night, and the noun 'allnighter' emerged in twentieth-century colloquial usage, particularly in student communities. Cognate formations such as 'overnight' and 'nightlong' reflect the same Germanic root underlying 'night'.
How allnighter is actually used
Informal register; common in student and workplace contexts in both British and American English. The verb 'pull' is the standard collocation ('pull an allnighter'), though 'do an allnighter' also occurs.
Easily confused with allnighter
'All-night' is an adjective describing something lasting all night (an all-night diner), while 'allnighter' is a noun referring to the act of staying awake through the night.