To surrender, renounce or relinquish, as sovereign power; to withdraw definitely from filling or exercising, as a high office, station, dignity; to fail to fulfill responsibility for.
To relinquish or renounce a throne, or other high office or dignity; to renounce sovereignty.
To reject something.
No.
Nothing; nix; often in the phrase "ixnay on ...", indicating something that must not be mentioned, often in Pig Latin