Synonyms of calmness

1 Syllable
rest, calm, lull
2 Syllables
poise, coolness, quietness, stillness, sang-froid, sangfroid, poising, steadying, concord, peace
3 Syllables
idealism, unrestraint, optimism, placidness, self-command, seriousness, soothingness, quietude, sedation, patience, coolnesses
4 Syllables
equilibriums, positivism, ataraxy, sanguinity, judiciousness, serenity, supinity, composure, moderations, tranquility, peacefulness, tranquillity, placidity, coolheadedness, cool-headedness, equilibrium, motionlessness, naturalness, moderation, somnolence, sanguineness, hopefulness
5 Syllables
moderateness, self-composure, levelheadedness, taciturnity, level-headedness, equanimity, nonresistance, delicatesse, imperturbation, longanimity, serious-mindedness, sober-mindedness, equanimities
8 Syllables
uncommunicativeness