Related Clues:
- Well-thought-out
- Underlying principle
- Fundamental principle
- Underlying reason
- Conforming to reason
- Sane and logical
- Sensible and logical
- Agreeable to reason
- The logical basis of some thing or action
- Consistent with reason
- Thinking logically
- Based on reason
- Logical and sensible
- Sensible, based on reason
- Reasonable, logical