Serene

adjective

adjective: serene; comparative adjective: serener; superlative adjective: serenest

 

calm, peaceful, and untroubled; tranquil.

"her eyes were closed and she looked very serene"

 

noun

an expanse of clear sky or calm sea.

"not a cloud obscured the deep serene"

synonyms: cloudless, unclouded, clear, bright, sunny

"the serene western sky"

antonyms: cloudy, stormy