calm

(noun): (in a person) The state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion.
(noun): (in a place or situation) The state of being calm; absence of noise and disturbance.
(noun): A period of time without wind.
(verb): To make calm.
(verb): To become calm.
(adjective): (of a person) Peaceful, quiet, especially free from anger and anxiety.
(adjective): (of a place or situation) Free of noise and disturbance.
(adjective): (of water) with few or no waves on the surface; not rippled.
(adjective): Without wind or storm.