usage: the state of having good sense and sound judgment; "his rationality may have been impaired"; "he had to rely less on reason than on rousing their emotions"
2. reasonableness, wisdom, wiseness, soundness
usage: goodness of reason and judgment; "the judiciary is built on the reasonableness of judges"
usage: the property of being moderate in price or expenditures; "the store is famous for the reasonableness of its prices"; "the modestness of the living standards here becomes obvious immediately"
4. reasonableness, moderation, moderateness
usage: moderation in expectations; "without greater reasonableness by both parties we will never settle this matter!"