›peaceful, quiet, or relaxed; without hurried movement, anxiety, or noise: The pilot said we’d have to make an emergency landing, and the flight attendants tried to keep us calm.›If weather is described as calm, it is not windy, and if the sea is described as calm, it is still or has only small waves: Our ship arrived at the Mississippi delta on a calm, clear night.calm
/kɑm/, /kɑlm/n[U]›Amid the calm, there was a sense that something could happen at any moment.calmly
/ˈkɑm·li/, /ˈkɑlm-/adv›He calmly made both free throws to win the game.calmness
/ˈkɑm·nəs/, /ˈkɑlm-/n[U]›The calmness and professionalism of the crew gave us confidence.