cool [ˈkuːl]

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¹ cool adjective

• somewhat cold : not warm or hot
• made of a light, thin material that helps you stay cool
• able to think and act in a calm way : not affected by strong feelings

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² cool verb

• to make (someone or something) cool —often + off or down
• to become cool : to lose heat or warmth —often + off or down
• to become less strong or intense especially in emotion —often + off or down

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³ cool noun

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⁴ cool adverb

• in a calm manner : in a way that does not seem unusual or excited