Can Just Be a Noun?

Just can be an adjective, an adverb, a noun or a verb.

Can just be used as a noun?

Although it is now old-fashioned, just can be used as a noun, relating to the concept of justice and standing in for 'right' or 'correct': Given the severity of the crime, life imprisonment was just. Her charity raises money for a just cause.

What is noun form of just?

Now the abstract noun of “just” will be “justice”. Justice refers to the quality of being just or righteousness.