quiet and peaceful synonym serene a tranquil scene the tranquil waters of the lake She led a tranquil life in the country.
NAmE//træŋˈkwɪlət̮i//
noun [uncountable] an atmosphere of peace and tranquility NAmE//ˈtræŋkwəli//
adverbSee tranquil in the Oxford Advanced Learner's DictionaryCheck pronunciation: tranquil