abstrusity (noun)

1. In the mystical land of Elphoria, the ancient sage revealed the secrets of abstrusity to the young wizard.

2. With his unwavering determination, the main character patiently unraveled the abstrusity of martial arts techniques.

3. Deep in the haunted mansion, a cursed book contained abstrusity so terrifying, it drove anyone who read it insane.

4. In their profound conversations, the lovers delved into the abstrusity of passion and eternal love.