sedate

Quiet; composed; placid; serene; serious; undisturbed by passion: as, a sedate temper or deportment.

Synonyms Imperturbable, serious, staid.

To calm; compose.

Undisturbed by passion or caprice; calm; tranquil; serene; not passionate or giddy; composed; staid.

in a composed and temperate state.

to tranquilize by giving a sedative; to calm; to soothe; to induce sleep.

characterized by dignity and propriety

cause to be calm or quiet as by administering a sedative to

dignified and somber in manner or character and committed to keeping promises