1. tranquillity Apathy, according to its Greek derivation, is a simple absence of feeling or emotion. There are persons to whom a certain degree of apathy is natural, an innate sluggishness of the emotional na Synonyms: apathy, calmness, indifference, quietness, stoicism, composure, insensibility, quietude, tranquillity, immobility, lethargy, sluggishness, unconcern, impassibility, phlegm, stillness, unfeelingness Antonyms: agitation, disturbance, feeling, sensibility, sympathy, alarm, eagerness, frenzy, sensitiveness, turbulence, anxiety, emotion, fury, storm, vehemence, care, excitement, passion, susceptibility, violence, distress
Synonyms for tranquillity 
