ABSTRUSITY
reconditeness, abstruseness, abstrusity, profoundness, profundity
(noun) wisdom that is recondite and abstruse and profound; “the anthropologist was impressed by the reconditeness of the native proverbs”
Source: WordNet® 3.1
Etymology
Noun
abstrusity (countable and uncountable, plural abstrusities)
(archaic) Abstruseness; that which is abstruse. [First attested in the mid 17th century.]
Source: Wiktionary
Ab*stru"si*ty, n.
Definition: Abstruseness; that which is abstruse. [R.] Sir T. Browne.
Source: Webster’s Unabridged Dictionary 1913 Edition