1. the quality or state of being unnatural; artificiality or deviation from what is normal or expected

Examples

• The unnaturalness of his smile made everyone uncomfortable.
• She was disturbed by the unnaturalness of the synthetic fabric.
• The actor’s performance suffered from its unnaturalness.
• The bright green color had an unnaturalness that seemed fake.
• Critics pointed out the unnaturalness of the dialogue in the play.
• The unnaturalness of the situation made him question what was happening.