1. to become calm, peaceful, or tranquil; to regain composure
After the storm passed, the sea serenaded itself and became peaceful.
Depois que a tempestade passou, o mar serenava-se e ficava tranquilo.
2. to settle down emotionally; to overcome agitation or anxiety
She took a deep breath and managed to serenade herself before the presentation.
Ela respirou fundo e conseguiu serenar-se antes da apresentação.