could have sworn

verb

Is very sure about; especially when the thing in question is apparently not the case or could be doubted.

“"You lost your bracelet?" "Yeah, but I could have sworn it was in the kitchen on the table when I last saw it."”

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Meanings

verb

alternative could've sworn

  1. informalIs very sure about; especially when the thing in question is apparently not the case or could be doubted.

    "You lost your bracelet?" "Yeah, but I could have sworn it was in the kitchen on the table when I last saw it."

Cite this entry
APA

could have sworn. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/could%20have%20sworn

MLA

“could have sworn.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/could%20have%20sworn. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “could have sworn,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/could%20have%20sworn.

Source: could have sworn on Wiktionary, CC BY-SA 4.0.