the exactness or regularity of anything.

Justness is chiefly used in speaking of thought, language, and sentiments. The justness of a thought consists in a certain precision or accuracy, by which every part of it is perfectly true, and pertinent to the subject. Justness of language consists in using proper and well chosen terms; in not saying either too much or too little. M. de Mere, who has written on justness of mind, distinguishes two kinds of justness; the one arising from taste and genius, the other from good sense or right reason. There are no certain rules to be laid down for the former, viz. to show the beauty and exactness in the turn or choice of a thought; the latter consists in the just relation which things have to one another.