1. the state of being peaceful, quiet, and without worry or excitement

Examples

• Her calmness during the emergency helped everyone stay focused.
• The calmness of the lake reflected the clear blue sky.
• He spoke with surprising calmness despite the bad news.
• The meditation class taught students how to achieve inner calmness.
• The calmness in her voice reassured the frightened children.
• After the storm passed, a peaceful calmness settled over the town.