From which year is the first OED citation for the term ASAP, as soon as possible: 1655 or 1955?
Etymology, Etymology, and more Etymology
as well as grammar, usage, euphemism, slang, jargon, semantics (meaning), linguistics, neologism, idiom, word origin, syntax, dialect, lexicon (vocabulary), diction, pidgin, synonym, antonym, homonym, cant, argot, lingo, and redundancy.

The critically-acclaimed board game MooT consists of tough questions about the nuances of the English language.
Answer: 1955
The first citation is from 1955; the term originated as United States Army slang.
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