. "\"Any process that stops or reduces the rate of oxidoreductase activity, the catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered.\" [GOC:ai]" . . "negative regulation of oxidoreductase activity" . "down regulation of oxidoreductase activity" . "down-regulation of oxidoreductase activity" . "downregulation of oxidoreductase activity" . "oxidoreductase inhibitor" . . . "inhibition of oxidoreductase activity" .