SEREN'ITY, noun [Latin serenitas.] 1. Clearness and calmness; as the serenity of the air or sky. 2. Calmness; quietness; stillness; peace. A general peace and serenity newly succeeded general trouble. Temple. 3. Calmness of mind; evenness of temper; undisturbed state; collness. I cannot see how any men should transgress those moral rules with confidence and serenity. Locke. 4. A title of respect.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI