1. The quality of being unclear or abstruse and hard to understand
   - obscureness, obscurity, reconditeness 
2. Wisdom that is recondite and abstruse and profound
   - reconditeness, abstrusity, profoundness, profundity

Derived forms: abstrusenesses

See also: abstruse

Type of: incomprehensibility, wisdom

• Jack Dempsey
• Jack Frost
• Jack Kennedy
• Jack Kerouac
• jack ladder
• Jack Lemmon
• Jack London
• jack mackerel
• Jack Nicklaus
• jack oak
• Jack of all trades
• jack off
• jack pine
• jack plane
• Jack Roosevelt Robinson
• Jack Russell
• Jack Russell terrier
• jack salmon
• Jack the Ripper
• jack up
• Jack William Nicklaus
• jack-a-lantern
• jack-by-the-hedge
• jack-in-the-box
• jack-in-the-pulpit