don't I know it

interjection

I know; I am very familiar with it (some stated fact).

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Meanings

interjection
  1. informalI know; I am very familiar with it (some stated fact).

    "Here's your shirt," said Slippery. "Make it snappy, we're late." "Don't I know it," replied the Owl, emerging from the closet with his dinner jacket and vest[…]

    1927 April, Boys' Life, page 16

Origin

A rhetorical question.

Full word history & related roots →
Cite this entry
APA

don't I know it. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/don't%20I%20know%20it

MLA

“don't I know it.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/don't%20I%20know%20it. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “don't I know it,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/don't%20I%20know%20it.

Source: don't I know it on Wiktionary, CC BY-SA 4.0.