Adjective
-
completely clear and fine
"serene skies and a bright blue sea"
-
not agitated
without losing self-possession
"spoke in a calm voice"
"remained calm throughout the uproar"
"he remained serene in the midst of turbulence"
"a serene expression on her face"
"she became more tranquil"
"tranquil life in the country"
- unagitated