serene

US /səˈriːn/
UK /səˈriːn/
"serene" picture
1.

sereno, calmo, tranquillo

calm, peaceful, and untroubled; tranquil

:
The lake was serene in the early morning light.
Il lago era sereno nella luce del mattino presto.
She had a serene expression on her face.
Aveva un'espressione serena sul viso.