subserve
sub.serve \s*b-'s*rv\ vt [L subservire to serve, be subservient, fr. sub- + servire to] serve 1: to serve as an instrument or means of 2: to promote the welfare or purposes of
sub.serve \s*b-'s*rv\ vt [L subservire to serve, be subservient, fr. sub- + servire to] serve 1: to serve as an instrument or means of 2: to promote the welfare or purposes of