sedate
se-date
adjective
Calm, dignified, and unhurried.
"The procession moved at a sedate pace."
verb
To calm or soothe with a drug.
"The vet had to sedate the injured dog."
Thesaurus
Synonyms: serious, solemn, grave, sober, tranquillise, tranquillize, tranquilize, calm, decorous, staid
Antonyms: arouse, brace, energise, energize, perk up, stimulate