swack up

verb

To lie; to deceive; to take in.

Meanings

verbswack up (third-person singular simple present swacks up, present participle swacking up, simple past and past participle swacked up)

present singular third person swacks up · participle present swacking up · participle past swacked up · past swacked up

  1. UKdatedschool slangTo lie; to deceive; to take in.

Origin

UK c. 1860s. Used at Christ's Hospital School, Sussex.

Full word history & related roots →
Cite this entry
APA

swack up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/swack%20up

MLA

“swack up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/swack%20up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “swack up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/swack%20up.

Source: swack up on Wiktionary, CC BY-SA 4.0.