serene
/səˈɹiːn/
noun
Meaning
Serenity; clearness; calmness.
Evening air; night chill.
verb
Meaning
To make serene.
adjective
Meaning
Peaceful, calm, unruffled.
"She looked at her students with joviality and a serene mentality."
Without worry or anxiety; unaffected by disturbance.
Fair and unclouded (as of the sky); clear; unobscured.
Used as part of certain titles, originally to indicate sovereignty or independence.
"Her Serene Highness"