ASAP
Initialism of as soon as possible.
Adverb
- Initialism of as soon as possible.
- Susan, please check those figures ASAP!
Antonyms: at leisure
Origin
From the 1950s. First known use in a book of Captain Annis G Thompson, who was involved in the Korean War, The Greatest Airlift (1954). Originally used in the meaning "as soon as militarily possible" by military forces.