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