- serveTo be a formal servant for (a god or deity); to worship in an official capacity.
- servitudeThe state of being a slave; slavery; being forced to work for others or do their bidding without one's consent or against one's will, either in perpetuity or for a period of time over which one has little or no control.
- serfA partially free peasant of a low hereditary class, attached like a slave to the land owned by a feudal lord and required to perform labour, enjoying minimal legal or customary rights.
- servomotorAn electric motor in a servomechanism, especially one which incorporates feedback so it accurately positions the device.
- CuldeeOne of a class of anchorites who lived in various parts of Scotland, Ireland, and Wales in the Middle Ages.
- servo-controlled