Here are some examples of words with the prefix "circu-":
* Circumference: The distance around a circle or other closed curve.
* Circumnavigate: To sail or travel completely around something, especially the globe.
* Circumspect: Careful to consider all the possible consequences of an action before doing it.
* Circumscribe: To draw a line around something, limiting its size or scope.
* Circuit: A complete path, especially for an electric current.