Subserve

Part of speech: verb (v.)

To serve in subordination or instrumentally; to be subservient to; to help forward; to promote. It is a great credit to know the ways of captivating Nature, and making her subserve our purposes, than to have learned all the intrigues of policy. Glanvill.

Part of speech: verb (v.)

To be subservient or subordinate; to serve in an inferior capacity. Not made to rule, But to subserve where wisdom bears command. Milton.