coolness

1 evenness of emotions or temper his coolness under pressure makes him everyone's first choice to head a project with an ironclad deadline Synonyms aplomb, calmness, collectedness, composedness, composure, cool, equanimity, countenance, equilibrium, imperturbability, placidity, repose, sangfroid, self-composedness, self-possession, serenity, tranquillity (or tranquility), tranquilnessRelated Words assurance, confidence, poise, self-assurance, self-assuredness, self-confidence, self-trust; easygoingness, laid-backness; apathy, detachment, impassivity, indifference, insensibility, numbness, phlegm, unconcernNear Antonyms alarm (also alarum), anxiety, anxiousness, apprehension, apprehensiveness, care, concern, disquiet, solicitude, uneasiness, worry; excitability, excitableness, nervousness; disturbanceAntonyms agitation, discomposure, perturbation

2 the quality or state of being fashionable the coolness of their clothes is something that high schoolers tend to obsess over Synonyms cool, fashionableness, hip, hipness, hipsterism, modishness, stylishness, trendiness, voguishnessRelated Words chic, chicness, dapperness, elegance, poshness, smartness, style, swank, swankiness; class, grace, gracefulness, majesty, stateliness; artfulness, polish, sophistication, taste, tastefulnessNear Antonyms flashiness, garishness, gaudiness, gracelessness, grotesqueness, tackiness, tastelessness, tawdrinessAntonyms unfashionableness