mindmap root((平静)) calm often implies a contrast with a foregoing or nearby state of agitation or violence: the protests ended, and the streets were ~ again. tranquil suggests a deep quietude or composure: the ~ beauty of a formal garden. serene stresses an unclouded and lofty tranquility: a woman of ~ beauty. placid suggests lack of excitement or agitation and an equable temper and may imply a degree of complacency: led a very ~ existence. peaceful implies a state of repose often in contrast with or following strife or turmoil: a former firebrand grown ~ in his old age.