calm

verb

Make someone or something peaceful, quiet, or less agitated; soothe.

"She tried to calm the crying child."

noun

A period or state of peacefulness, tranquillity, or freedom from disturbance.

"A sense of calm settled over the room."

adjective

Not agitated, disturbed, or showing strong emotions; peaceful and tranquil.

"The sea was perfectly calm today."

Thesaurus

Synonyms: tranquillize, tranquillise, tranquilize, calm down, still, lull, quiet, quieten, sedate, calm air, equanimity, composure

Antonyms: agitate, arouse, brace, charge, charge up, commove, discomposure, energise, energize, excite, perk up, rouse