1. not influenced or changed by something
2. natural and sincere in behavior; not pretentious

Examples

• The small town remained unaffected by the economic crisis.
• Her cheerful mood was unaffected by the bad weather.
• Despite his fame, he remained unaffected and down-to-earth.
• The children were unaffected by their parents’ divorce.
• She spoke in an unaffected manner that put everyone at ease.
• The remote village was unaffected by modern technology.
• His unaffected smile won over the entire audience.