| noun | the state of having good sense and sound judgment “his rationality may have been impaired” |
| noun | goodness of reason and judgment “the judiciary is built on the reasonableness of judges” |
| noun | the property of being moderate in price or expenditures “the store is famous for the reasonableness of its prices” |
| noun | moderation in expectations “without greater reasonableness by both parties we will never settle this matter!” |
| noun | the quality of being plausible or acceptable to a reasonable person “he questioned the tenability of my claims” |
| rational | adjective | consistent with or based on or using reason |
| reason | verb | present reasons and arguments |
| reasonable | adjective | marked by sound judgment |
| moderate | adjective | being within reasonable or average limits; not excessive or extreme |
| modest | adjective | not large but sufficient in size or amount |
| tenable | adjective | based on sound reasoning or evidence |