Synonyms:
operative
Meaning: being in force or having or exerting force; "operative regulations"; "the major tendencies operative in the American political system"
Usage examples
Under the outrageous treatment of the white peoples an idea of unifying the "Yellow" peoples is pretty certain to become audibly and visibly operative before many years.
Substance in space we are cognizant of only through forces operative in it, either drawing others towards itself (attraction), or preventing others from forcing into itself (repulsion and impenetrability).
But it is so complete, so imaginatively comprehensive, so immediately operative on the conscience through its poetic suggestiveness, that when it is once understood, there is nothing more to be said, but everything to be done.