say it: sur-EE-nuh-lee
serenely is an adverb meaning "in a peacefully serene manner". It carries one recorded sense.
in a peacefully serene manner
“I had the feeling that he was waiting, too--serenely patient”
Definitions, synonyms and semantic relations for serenely 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.