Twenty-four seven /ˌtwenti ˌfɔː ˈsevn/$/ˌtwenti ˌfɔːr ˈsevn/

(also 24/7 or 24-7 or twenty-four/seven) (adj. or adv. informal)

This is an informal way to sat all the time and it literally means 24 hours a day, 7 days a week:

“This drugstore is open 24/7.” “a sports website updated 24/7” “Having a kid is a 24/7 job.”

This expression designates a round-the-clock service, typically including holidays, as might be offered by a supermarket, ATM, gas station, concierge service or manned data center:

“They’re open twenty-four seven; you can go there any time you want.”

An alternate orthography for the numerical part includes 24×7 (usually pronounced “twenty-four by seven”). Less commonly used, 24/7/52 (adding “52 weeks”) and 24/7/365 service (adding “365 days”) make it clear that service is available every day of the year.

Synonyms include round-the-clock service (with/without hyphens), especially in British English, and nonstop service.


  • Research Questions:
  1. Find phrases & expressions like 24/7 with only numbers in them.
  2. Find phrases & expressions like 24/7 with slash in it.
  3. What other expressions are there meaning “all the time”?
  4. Why do we use slash in 24/7? Can we use hyphen or space or other things?