calm

Adjective

• (of weather) free from storm or wind
  • calm seas
    

• not agitated; without losing self-possession
  • spoke in a calm voice
    
  • remained calm throughout the uproar
    
  • he remained serene in the midst of turbulence
    
  • a serene expression on her face
    
  • she became more tranquil
    
  • tranquil life in the country
    

Noun

• wind moving at less than 1 knot; 0 on the Beaufort scale

• steadiness of mind under stress
  • he accepted their problems with composure and she with equanimity
    

Verb

• cause to be calm or quiet as by administering a sedative to
  • The patient must be sedated before the operation
    

• become quiet or calm, especially after a state of agitation
  • After the fight both men need to cool off.
    
  • It took a while after the baby was born for things to settle down again.
    

• make steady
  • steady yourself
    

• make calm or still
  • quiet the dragons of worry and fear
    

Related words

• Synonyms: 
  unagitated , serene , tranquil , calm air , composure , calmness , equanimity , sedate , tranquilize , tranquillize , tranquillise , calm down , cool off , chill out , simmer down , settle down , cool it , steady , becalm , quiet , quieten , lull , still
• Antonyms: 
  stormy , discomposure , stimulate , arouse , brace , energize , energise , perk up , agitate , rouse , turn on , charge , commove , excite , charge up