To deny, as a claim; to refuse.
To renounce all claim to; to deny ownership of or responsibility for; to disown; to disavow; to reject.
To make an admission or warning.
(law) To relinquish or deny having a claim; to disavow another's claim; to decline accepting, as an estate, interest, or office.
To reject something.
No.
Nothing; nix; often in the phrase "ixnay on ...", indicating something that must not be mentioned, often in Pig Latin