negatively regulates auxin-activated signaling pathway negative regulation of signal transduction regulation of auxin mediated signaling pathway negative regulation of auxin mediated signaling pathway negative regulation of auxin mediated signalling pathway GO:0010930 Any process that decreases the rate, frequency or extent of auxin mediated signaling pathway. Auxin mediated signaling pathway is the series of molecular signals generated in response to detection of auxin. biological_process biological regulation