Subminister \Sub*min"is*ter\, v. t. [L. subministrare, subministratum. See {Sub-}, and {Ministre}, v. t.] To supply; to afford. [Obs.] --Sir M. Hale. Subminister \Sub*min"is*ter\, v. i. To be subservient; to be useful. [Obs.] ``Our passions . . . subminister to the best and worst purposes.'' --L'EStrange.