calm

adjective

• 1not showing or feeling nervousness, anger, or other strong emotions:she had to keep calm at all costs his voice was calm
• (of a place) peaceful after violent activity:the city was reported to be calm, but army patrols remained

• 2(of the weather) pleasantly free from wind:the night was clear and calm
• (of the sea) not disturbed by large waves: a dead calm sea

noun

• 1the absence of strong emotions; calm feelings:his usual calm deserted him
• the absence of violent activity in a place:the elections proceeded in an atmosphere of relative calm [in singular]:an edgy calm reigned in the capital

• 2the absence of wind:in the centre of the storm calm prevailed
• still air represented by force 0 on the Beaufort scale (less than 1 knot or 1 km/h).
• [count noun] (often calms) an area of the sea without wind: flat calms

verb

• make (someone) tranquil and quiet; soothe:I took him inside and tried to calm him down
• [no object] (calm down) (of a person) become tranquil and quiet: gradually I calmed down and lost my anxiety