TRANQUIL: Synonyms and Related Words. What is Another Word for TRANQUIL?
The synonyms and related words of “Tranquil” are: placid, quiet, smooth, still, unruffled, calm, serene, unagitated, peaceful, restful, reposeful, relaxing, soothing, undisturbed, idyllic, halcyon, mild, pleasant, composed, relaxed, cool, cool, calm, and collected, even-tempered, self-possessed, controlled, unexcitable, unflappable, unperturbed, imperturbable, dispassionate, stoical, sober, unemotional, untroubled, pacific, nonviolence, serenity, quiescent, noiseless, tranquilize and 13 more.