- tranquillity
- n1. calm, calmness, motionlessness, stillness, quietness, quietude; serenity, sereneness, placidity, placidness; repose, reposefulness, rest, restfulness, peace, peacefulness, harmony, harmoniousness; ataraxia.2. composure, self-possession, coolness, dispassion; equanimity, poise, sang-froid; steadiness, self-control, level-headedness.
A Note on the Style of the synonym finder. 2014.