Serenity, n.
Etymology: [L. serenuas: cf. F. sérénité.]
1. The quality or state of being serene; clearness and calmness; quietness; stillness; peace. A general peace and serenity newly succeeded a general trouble. Sir W. Temple.
2. Calmness of mind; eveness of temper; undisturbed state; coolness; composure. I can not see how any men should ever transgress those moral rules with confidence and serenity. Locke.
Note: Serenity is given as a title to the members of certain princely families in Europe; as, Your Serenity.
Shades of meaning
Fernald lists serenity only as an antonym, under storm.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given