quiddity

The real nature of a thing; the essence.

A hairsplitting distinction; a quibble.

In scholastic philos., that which distinguishes a thing from other things, and makes it what it is, and not another; substantial form; nature.

A trifling nicety; a cavil; a quirk or quibble.

The essence, nature, or distinctive peculiarity, of a thing; that which answers the question, Quid est? or, What is it?

A trifling nicety; a cavil; a quibble.

The essence or inherent nature of a person or thing.

A trifle; a nicety or quibble

An eccentricity; an odd feature

an evasion of the point of an argument by raising irrelevant distinctions or objections