1. the quality or state of being uncommon; rarity

Examples

• The uncommonness of the bird species made it a prized sighting for birdwatchers.
• She was struck by the uncommonness of his kindness in such a competitive environment.
• The uncommonness of snow in this region made the winter storm particularly memorable.
• The museum highlighted the uncommonness of the ancient artifact.
• His uncommonness as a left-handed pitcher gave him an advantage in baseball.
• The uncommonness of her name often led to mispronunciations.