1. (superl.) Moderately cold; between warm and cold; lacking in warmth; producing or promoting coolness.

2. (superl.) Not ardent, warm, fond, or passionate; not hasty; deliberate; exercising self-control; self-possessed; dispassionate; indifferent; as, a cool lover; a cool debater.

3. (superl.) Not retaining heat; light; as, a cool dress.

4. (superl.) Manifesting coldness or dislike; chilling; apathetic; as, a cool manner.

5. (superl.) Quietly impudent; negligent of propriety in matters of minor importance, either ignorantly or willfully; presuming and selfish; audacious; as, cool behavior.

6. (superl.) Applied facetiously, in a vague sense, to a sum of money, commonly as if to give emphasis to the largeness of the amount.

7. (n.) A moderate state of cold; coolness; -- said of the temperature of the air between hot and cold; as, the cool of the day; the cool of the morning or evening.

8. (v. t.) To make cool or cold; to reduce the temperature of; as, ice cools water.

9. (v. t.) To moderate the heat or excitement of; to allay, as passion of any kind; to calm; to moderate.

10. (v. i.) To become less hot; to lose heat.

11. (v. i.) To lose the heat of excitement or passion; to become more moderate.

Buddha-like composure Laodicean OK Olympian Oriental calm abate abnegation above all that absolute zero abstinence ace-high affectless aguey aguish air-condition air-cool algid algidity allay aloof anesthetized apathetic aplomb appease arctic arrest arrogant assassinate assured at rest audacious autistic aweless awelessness backward bad balance balanced balanced personality bang-up bashful bitterness blank bleakness blue with cold blunt bold bonzer boss bracing brazen bridle briskness bully bump off bumptious but good calculated calm calm disposition calm down calm of mind calmness catatonic chattering check chill chilled chilliness chilling chilly chromatic cloistered cold cold as charity cold-blooded coldhearted coldness collect collected colorific coloring commonsense compose composed composure conciliate confident conservatism constancy constrain constrained constraint contain continence control controlled contumelious cool off coolheaded coolheadedness cooling coolish coolness coolth corking countenance crackerjack cradle crispness cryogenics cryology curb curtail damp dampen dandy decelerate decrease in temperature deflect defuse deliberate delicious detached deter dichromatic diminish disaccordant disaffect discourage discreet disdainful disincline disinterest dispassion dispassionate distant distract dithery divert divine do in dompt drugged ducky dulcify dull dust off dwindling ease easy mind ebbing emotionally dead emotionless enjoin equable equilibrium even even out even-tempered even-tenored evenness exclusive execute expectation expected expecting expressionless fab familiar fast fastness fervorless fiducial fine and dandy finish firm firm as Gibraltar firmness forbidding forward freezing freezing point fresh freshen freshness frigid frigidity frosted frostiness frosty frozen frozen to death gear gelid gelidity gentle gentleness glorious glowing golden mean govern great groovy guard guarded halcyon half-frozen halfhearted happy medium harmonious heartless heavy hinder hold hold at bay hold back hold fast hold in hold in check hold in leash hold up hubristic hunky-dory hush hushed ice ice-cool iciness icy icy calm immovable impartiality impassible impassive impersonal impertinent imperturbability imperturbable imperturbation impudent in equilibrium inaccessible inclemency incompatible indifferent indispose indisturbance inexcitability inexcitable infrigidate inhibit inhospitable inimical