The definition of serene is untroubled, or is the title for a high-ranking member of royalty.(adjective)
See serene in Webster's New World College Dictionary
Origin: L serenus < IE *ksero-, dry (> Gr xēros, dry, OHG serawēn, to dry out) < base *ksā-, to burn
See serene in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Latin serēnus, serene, clear.
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