Word.ws English Dictionary

could have sworn

could have sworn verb: is very sure about; especially when the thing in question is apparently not the case or could be doubted.

Verb

could have sworn

  1. (informal) 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."

Forms of could have sworn

alternative formcould've sworn

Questions about could have sworn

What does could have sworn mean?
Could have sworn means is very sure about; especially when the thing in question is apparently not the case or could be doubted.
What part of speech is could have sworn?
Could have sworn is a verb.

Words near could have sworn in the dictionary

  1. could fit on the back of a postage stamp
  2. could go all day
  3. could have cared less
  4. could have done with
  5. could have fooled me
  6. could have sworn
  7. could have, would have, should have
  8. could hear a pin drop
  9. could I get the bill
  10. could I see the menu, please
  11. could not away with

Source and license

Adapted from Wiktionary: could have sworn (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “could have sworn.” Word.ws, https://word.ws/could_have_sworn. Based on Wiktionary, CC BY-SA 4.0.