debilitating de·bi·li·tating UK/dɪˈbɪlɪteɪtɪŋ(ɡ)/ US/dʌˈbɪlʌˌteɪtɪŋ/ uncommon adjective 1. impairing the strength and vitality Antonymsinvigorating Similardebilitativedraining WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.