Synonyms for Serenity

Tranquillity
ataraxy calmness composure nirvana	peacefulness quiet quietism quietude	rest satori serenity sleep	slumber stillness tranquillity

Abstinence
abnegation abstinence austerity calm conservatism constraint	continence control cool dispassion evenness gentleness	happy medium judiciousness neutrality nonviolence pacifism repose	restraint self-restraint serenity sobriety stability tranquillity