noun
serenity
suh-REN-uh-tee/səˈrenəti/
A state of calm and peace.
She sits beside the still pond in serenity.

Etymology
Serenity carries the image of clear, unclouded weather into the mind. What first described fair, calm conditions came to describe an equally untroubled temper or emotional state.
In context
join her calm serenity, which contrasts the vibrant energy of the child
More examples
- The garden offered serenity.
- His voice conveyed serenity.
- They valued the room's serenity.
Forms
serenity
serene adjective — calm and peaceful
Similar words
- calm
- The ordinary direct equivalent.
- tranquility
- Peaceful stillness in a person or setting.