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1. The act of appeasing (as by acceding to the demands of)
   - appeasement

1. Make calm or still
   "calm the dragons of worry and fear"; "calm down the dragons of worry and fear"
   - calm down, quiet, tranquilize [N. Amer], tranquillize, tranquillise [Brit], quieten, lull, still
    
2. Stop being excited, agitated or moving
   "calm yourself"
   - steady, becalm
    
3. Become quiet or calm, especially after a state of agitation
   "After the fight both men need to calm down."
   - calm down, cool off, chill out, simmer down, settle down, cool it, wind down, take a chill pill
    
4. Cause to be calm or quiet as by administering a sedative to
   "The patient must be calmed before the operation"
   - sedate, tranquilize [N. Amer], tranquillize, tranquillise [Brit]

Type of: affect, change state, comfort, console, social control, solace, soothe, stabilise [Brit], stabilize, turn

Antonym: agitate

Encyclopedia: Calm