English

Noun

swack-up ‎(plural swack-ups)

1. (dated, Britain, public school slang) A lie; a falsehood.

Synonyms

• See also Wikisaurus:lie

References

• Farmer, John Stephen (1900) The Public School Word-Book, London: Hirshfeld Brothers, page 240
• Eric Partridge, A Dictionary of Slang and Unconventional English, 8th edition, 1984