Noun
1. 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. goodness of reason and judgment;
"the judiciary is built on the reasonableness of judges"3. the property of being moderate in price;
"the store is famous for the reasonableness of its prices"4. moderation in expectations;
"without greater reasonableness by both parties we will never settle this matter!"5. the quality of being plausible or acceptable to a reasonable person;
"he questioned the tenability of my claims"