1. the quality or state of being buttery; resemblance to or containing butter
Usage: commonly used to describe texture or flavor of food
2. smoothness or slickness of movement or manner
Usage: informal; often used to describe graceful or polished behavior

Examples

• The butteriness of the croissant made it irresistible.
• She appreciated the butteriness of the mashed potatoes.
• The sauce had a rich butteriness that complemented the fish perfectly.
• His butteriness on the dance floor impressed everyone at the party.
• The butteriness of the cake's frosting was exactly what the recipe called for.
• The speaker's butteriness and charm won over the skeptical audience.