unfree
A person lacking freedom, such as a tenant bound to a manor.
historical
The commissioners then proceeded to consider the various petitions and remonstrances of the unfrees, and to determine the amount to be levied from each.
Where it comes from
From Middle English unfre, from Old English [Term?], from Proto-West Germanic *unfrī; cognates include Middle High German unfrī (German unfrei), Middle Low German unvrī, Middle Dutch onvri (Dutch onvrij). By surface analysis, un- + free.
Adapted from the Wiktionary entry unfree (CC BY-SA 4.0).