1. the quality or state of being serene; calmness and peacefulness

Examples

• The sereneness of the lake at dawn was breathtaking.
• She spoke with a sereneness that calmed everyone in the room.
• The garden’s sereneness provided a perfect escape from city noise.
• His face showed a sereneness that came from years of meditation.
• The sereneness of the countryside helped her recover from stress.
• There was a deep sereneness in her voice as she read the poem.