adjective
sedate
sih-DAYT/sɪˈdeɪt/
Calm, quiet, and dignified.
The sedate man sits upright in the garden with his hands on a cane.

Etymology
Latin sedare, “to make calm,” was formed from a verb meaning “to sit.” Its participle described someone composed or tranquil—the connection to a quiet, dignified manner.
In context
It’s nothing but misfortunes now, she added suddenly with that peculiarly sedate air which children try hard to assume when they want to speak like grown- up people.
More examples
- They prefer a sedate dinner to a noisy party.
- Even during the heated debate, he remains sedate.
- The ceremony has a sedate atmosphere, with quiet music and formal speeches.
Forms
sedate · sedater · sedatest
sedately adverb — In a calm, quiet, dignified manner.
sedateness noun — The quality of being calm and dignified.