calm
Definitions
Not showing or feeling nervousness, anger, or other strong emotions.
A period or condition of freedom from disturbance, agitation, or strong wind.
Examples
She took a deep breath to stay calm during the high-pressure meeting.
The lake was perfectly calm under the soft glow of the morning sun.
It is important to remain calm when dealing with an emergency situation.
Synonyms
serene tranquil peaceful placid composed collected untroubled