Here are some examples of words derived from this root:
* Static: meaning "at rest" or "not moving"
* Stasis: meaning "a state of balance or equilibrium"
* Stationary: meaning "not moving"
* Stagnant: meaning "not flowing"
* Stay: meaning "to remain in one place"
* Stand: meaning "to remain upright"
While "στα-" itself isn't a full word, it's a common element in many Greek-derived words related to stopping or being still.