Inhibitory /(?)/

In·hib·i·to·ry

Inhibitory

a.
  1. Of or pertaining to, or producing, inhibition; consisting in inhibition; tending or serving to inhibit; as, the inhibitory action of the pneumogastric on the respiratory center.
    I would not have you consider these criticisms as inhibitory.

Phrases & Compounds
Inhibitory nerves
those nerves which modify, inhibit, or suppress a motor or secretory act already in progress.