Meanings
Synonyms & antonyms
interjectionSynonym of KYS (“kill yourself”).
Similar
Origin
From kiss + your + sister, since it has the same initial letters as "kill yourself", and is also a suggestion usually greeted with repulsion.
Full word history & related roots →Cite this entry
APA
kiss your sister. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/kiss%20your%20sister
MLA
“kiss your sister.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/kiss%20your%20sister. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “kiss your sister,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/kiss%20your%20sister.
Source: kiss your sister on Wiktionary, CC BY-SA 4.0.