serenity

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

the state of being calm, peaceful, and untroubled.

:
•
an oasis of serenity amidst the bustling city
:
calmnesscalmcomposuretranquilitypeacecollectednesspoiseaplombself-possessionsangfroidequanimityeasetogethernessataraxyataraxiatranquillityquietquietnessquietudestillnessrepose
:
anxietyagitationdisruption
:
serene