#1 profundity n. [reconditeness, abstruseness, abstrusity, profoundness] wisdom that is recondite and abstruse and profound; "the anthropologist was impressed by the reconditeness of the native proverbs". wn
#2 profundity n. [profoundness] intellectual depth; penetrating knowledge; keen insight; etc; "the depth of my feeling"; "the profoundness of the silence". wn
#3 profundity n. [astuteness, profoundness, depth, deepness] the intellectual ability to penetrate deeply into ideas. wn
#4 profundity n. [deepness, profoundness] the quality of being physically deep; "the profundity of the mine was almost a mile". wn
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