1. fair and sensible; not extreme or excessive
2. based on good judgment or sound thinking
3. not too expensive; affordable

Examples

• The teacher made a reasonable request for students to turn in homework on time.
• It’s reasonable to expect good service at a restaurant.
• The price for the used car was very reasonable.
• She gave a reasonable explanation for being late.
• The hotel rates are reasonable for this location.
• It’s not reasonable to expect perfection from everyone.
• The judge made a reasonable decision based on the evidence.