defencelessness/dɪˈfɛnsləsnəs/EtymologyFrom defenceless + -ness.defencelessness means the state or condition of being defenceless. Lexicurio rates it Rare gem — a strength score of 83 out of 100.defencelessness is pronounced /dɪˈfɛnsləsnəs/.nounThe state or condition of being defenceless.