know one's arse from one's elbow

A form of know one's ass from one's elbow — Synonym of know one's ass from a hole in the ground.

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Meanings

verbknow one's arse from one's elbow (third-person singular simple present knows one's arse from one's elbow, present participle knowing one's arse from one's elbow, simple past knew one's arse from one's elbow, past participle known one's arse from one's elbow)

present singular third person knows one's arse from one's elbow · participle present knowing one's arse from one's elbow · past knew one's arse from one's elbow · participle past known one's arse from one's elbow

  1. CommonwealthalternativeAlternative form of know one's ass from one's elbow.

Synonyms & antonyms

Also see
know b from a battledore
Cite this entry
APA

know one's arse from one's elbow. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/know%20one's%20arse%20from%20one's%20elbow

MLA

“know one's arse from one's elbow.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/know%20one's%20arse%20from%20one's%20elbow. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “know one's arse from one's elbow,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/know%20one's%20arse%20from%20one's%20elbow.

Source: know one's arse from one's elbow on Wiktionary, CC BY-SA 4.0.