noun

1. The grantee of a fief, feud, or fee; one who keeps land of a superior, and who vows fidelity and homage to him, normally a lord of a manor; a feudatory; a feudal tenant.

2. A subordinate

Synonyms: dependant, servant, slave, subject

verb

1. To treat as a vassal or to reduce to the position of a vassal; to subject to control; to enslave.

2. To subordinate to someone or something.

adjective

1. Resembling a vassal; slavish; servile.