subservient (adj.) Look up subservient at Dictionary.com
1630s, "useful, serviceable," from Latin subservientem (nominative subserviens), present participle of subservire "assist, serve, come to the help of, lend support," from sub "under" (see sub-) + servire "serve" (see serve (v.)). The meaning "slavishly obedient" is first recorded 1794. Related: Subserviently.