The Collaborative International Dictionary
Subserve \Sub*serve"\, v. t. [imp. & p. p. Subserved; p. pr. & vb. n. Subserving.] [L. subservire; sub under + servire to serve. See Serve.] 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.
Wiktionary
vb. (present participle of subserve English)
Usage examples of "subserving".
If anything after this could excite surprise, it would be that they have been able so far to throw dust in the eyes of our own citizens, as to fix on those who wish merely to recover self government the charge of subserving one foreign influence, because they resist submission to another.