1. things that are difficult to understand; obscure or complex matters
Usage: plural form of abstrusity; formal

Examples

• The professor’s lecture was filled with philosophical abstrusities that confused most students.
• She avoided the abstrusities of legal jargon and explained the contract in simple terms.
• The book’s abstrusities made it accessible only to advanced scholars.
• Mathematical abstrusities often require years of study to comprehend.
• The committee decided to focus on practical solutions rather than theoretical abstrusities.