abstruseness in WordNet English dictionary

1. the quality of being unclear or abstruse and hard to understand
   obscureness  obscurity  abstruseness  reconditeness 
   
2. wisdom that is recondite and abstruse and profound
   "the anthropologist was impressed by the reconditeness of the native proverbs"
   reconditeness  abstruseness  abstrusity  profoundness  profundity