- 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.]
- 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.
Etymology: L. serenuas: cf. F. sérénité