depreciating dep·re·cia·ting US/dɪˈpriʃiˌeɪtɪŋ/ uncommon adjective 1. tending to decrease or cause a decrease in value “a depreciating currency” “depreciatory effects on prices” Synonymsdepreciativedepreciatory Similardecreasing WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.