Similar word to requiescence:

affluence, ataraxia, bed of roses, calm, calmness, comfort, content, contentment, easiness, enjoyment, gratification, happiness, idleness, inactivity, inertia, inertness, leisure, luxury, passivity, peace of mind, prosperity, quietness, quietude, relaxation, repose, requiescence, rest, restfulness, satisfaction, security, serenity, supinity, tranquility