disposition, temperament - your usual mood; "he has a happy disposition"

aplomb, assuredness, sang-froid, cool, poise - great coolness and composure under strain; "keep your cool"

serenity, tranquility, placidity, tranquillity, repose, quiet - a disposition free from stress or emotion

lull - calm by deception; "Don't let yourself be lulled into a false state of security"

compose - calm (someone, especially oneself); make quiet; "She had to compose herself before she could reply to this terrible insult"

appease, assuage, conciliate, gentle, gruntle, lenify, mollify, pacify, placate - cause to be more favorably inclined; gain the good will of; "She managed to mollify the angry customer"

reassure, assure - cause to feel sure; give reassurance to; "The airline tried to reassure the customers that the planes were safe"

comfort, console, solace, soothe - give moral or emotional strength to

stabilise, stabilize - become stable or more stable; "The economy stabilized"

change state, turn - undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election"

affect - act physically on; have an effect upon

hypnotise, hypnotize, mesmerise, mesmerize - induce hypnosis in

composed - serenely self-possessed and free from agitation especially in times of stress; "the performer seemed completely composed as she stepped onto the stage"; "I felt calm and more composed than I had in a long time"

peaceful - not disturbed by strife or turmoil or war; "a peaceful nation"; "peaceful times"; "a far from peaceful Christmas"; "peaceful sleep"

peaceful - not disturbed by strife or turmoil or war; "a peaceful nation"; "peaceful times"; "a far from peaceful Christmas"; "peaceful sleep"

unagitated - not agitated or disturbed emotionally