calmly

Concise Oxford English Dictionary © 2008 Oxford University Press:
calm/kɑːm/

▶adjective

• 1 not showing or feeling nervousness, anger, or other emotions.

• 2 (of a place) peaceful and undisturbed.

  ■ (of weather or the sea) free from wind.

▶noun

• 1 the state or fact of being peaceful or tranquil.

• 2 the absence of wind.

  ■ (calms) an area of the sea without wind.

▶verb (often calm down) make or become tranquil and quiet.

– derivatives
calmly adverb,
calmness noun.

– origin ME: via one of the Romance languages from Gk kauma ‘heat (of the day)’.