man·u·mit 
(măn′yə-mĭt)
(măn′yə-mĭt)tr.v. man·u·mit·ted, man·u·mit·ting, man·u·mits
To free from slavery or bondage; emancipate.
[Middle English manumitten, from Old French manumitter, from Latin manūmittere : manū, ablative of manus, hand; see man-2 in the Appendix of Indo-European roots + mittere, to send from.]
man′u·mission (-mĭshən) n.
man′u·mitter n.