Synonyms of tranquil in English:

tranquil


See definition of tranquil

adjective

1‘a wonderfully tranquil village’

SYNONYMS
peaceful, restful, reposeful, calm, quiet, still, serene, placid, relaxing, soothing, undisturbed, idyllic, halcyon, mild, pleasant
ANTONYMS

disturbed, busy

2‘Martha smiled, perfectly tranquil’

SYNONYMS
calm, placid, composed, relaxed, at peace, cool, cool, calm, and collected, cool-headed, serene, even-tempered, self-possessed, controlled, unexcitable, unflappable, unruffled, unperturbed, imperturbable, undisturbed, unagitated, dispassionate, stoical, sober, unemotional, untroubled, pacific
informal together, laid-back
North American informal nonplussed
ANTONYMS

excitable