serenity

US /səˈren.ə.t̬i/
UK /səˈren.ə.t̬i/
1.

êm đềm, sự bình tỉnh, sự yên ặng, sự yên ổn

the state of being calm, peaceful, and untroubled.

:
an oasis of serenity amidst the bustling city