1. (adjective) showing reason or sound judgment

• sensible

2. (adjective) not excessive or extreme

• fair
• fairish

3. (adjective) marked by sound judgment

• sane

1. (adjective) showing reason or sound judgment

• commonsense
• commonsensible
• commonsensical
• healthy
• intelligent
• level-headed
• levelheaded
• sound
• tenable
• well-founded

2. (adjective) not excessive or extreme

• moderate

3. (adjective) marked by sound judgment

• rational

1. (adjective) showing reason or sound judgment

• fair
• just
• logical
• rational
• valid

1. (adjective) showing reason or sound judgment

• reasonableness
• tenability
• tenableness
• reasonableness
• sensibleness

2. (adjective) not excessive or extreme

• equity
• fairness
• moderateness
• modestness
• reasonableness
• reasonableness

3. (adjective) marked by sound judgment

• rationality
• reason
• reasonableness
• saneness
• sanity

1. (adjective) showing reason or sound judgment

• unreasonable