desensitizing de·sen·si·tizing US/dɪˈsɛnsʌˌtaɪzɪŋ/ uncommon adjective 1. making less susceptible or sensitive to either physical or emotional stimuli Synonymsdesensitising Antonymssensitizing Similarnumbing WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.