Neif is an archaic word which typically refers to a bonded or serf servant. Although this term is no longer in use, there are several synonyms that can be utilized to convey a similar meaning. Some possible alternatives for Neif include thrall, vassal, bondsmen, peon, serf, and villein. Each of these words describes someone who is legally bound to serve another person or entity, often in a subservient capacity. These terms were commonly used in medieval times and are still useful today to help convey history and an understanding of social hierarchies in the past.