not that I know of

== English == === Interjection === not that I know of Used to indicate that the response is probably no, but that the speaker is not entirely certain. ==== Translations ==== === References === “not that I know of” in Longman Dictionary of Contemporary English, Longman. “not that I know of”, in Cambridge English Dictionary, Cambridge, Cambridgeshire: Cambridge University Press, 1999–present. “not that I know of”, in Collins English Dictionary, 2011–present.