Here are some examples of words derived from "sur":
* Surpass: To exceed or go beyond in quality, quantity, or degree.
* Surface: The outer layer or face of something.
* Surrender: To give oneself or something into the power of another.
* Surveillance: Close observation, especially of a suspected person or place.
* Survey: To examine or inspect something systematically.
* Surname: A hereditary name shared by members of a family.
In summary, "sur" denotes a position of superiority, excess, or being on top of something.