- Gives the right error message when using `kubectl delete` a wrong resource. ([#83825](https://github.com/kubernetes/kubernetes/pull/83825), [@zhouya0](https://github.com/zhouya0))
- If a bad flag is supplied to a kubectl command, only a tip to run `--help` is printed, instead of the usage menu.  Usage menu is printed upon running `kubectl command --help`. ([#82423](https://github.com/kubernetes/kubernetes/pull/82423), [@sallyom](https://github.com/sallyom))