1 synonym for Serenity

tranquility, serenity, peace, composure, placidity, stillness, quietness, equanimity, coolness, poise, collectedness, unflappability, imperturbability, sedateness, repose, relaxation, ease, nonchalance, sangfroid, self-possession, self-control, ataraxia, placidness, peacefulness, restfulness, hush, lull, quietude [x]