Word.ws English Dictionary

not that I know of

not that I know of interjection: used to indicate that the response is probably no, but that the speaker is not entirely certain.

Interjection

not that I know of

  1. Used to indicate that the response is probably no, but that the speaker is not entirely certain.

Questions about not that I know of

What does not that I know of mean?
Not that I know of means used to indicate that the response is probably no, but that the speaker is not entirely certain.
What part of speech is not that I know of?
Not that I know of is an interjection.

Words near not that I know of in the dictionary

  1. not so fast
  2. not so hot
  3. not so much
  4. not someone's circus, not someone's monkeys
  5. not that
  6. not that I know of
  7. not the brightest bulb
  8. not the brightest bulb in the chandelier
  9. not the case
  10. not the end of the world
  11. not the sharpest crayon in the box

Source and license

Adapted from Wiktionary: not that I know of (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: “not that I know of.” Word.ws, https://word.ws/not_that_i_know_of. Based on Wiktionary, CC BY-SA 4.0.