say it: sur-EEN
serene is an adjective meaning "not agitated; without losing self-possession". It carries 2 recorded senses.
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”
completely clear and fine
“serene skies and a bright blue sea”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for serene come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.