serenity

The state or quality of being serene.

The quality or condition of being serene; clearness; calmness; quietness; stillness; peace: as, the serenity of the air or sky.

Calmness of mind; tranquillity of temper; placidity.

A title of dignity or courtesy given to certain princes and high dignitaries. It is an approximate translation of the German Durchlaucht, more commonly rendered Serene Highness. See serene, 3.

The quality or state of being serene; clearness and calmness; quietness; stillness; peace.

Calmness of mind; eveness of temper; undisturbed state; coolness; composure.

The state of being serene; calmness; peacefulness.

A lack of agitation or disturbance.

A title given to a reigning prince or similar dignitary.

the absence of mental stress or anxiety