cooler

Definitions
Examples
Relations

(adjective): Having a slightly low temperature; mildly or pleasantly cold.
(adjective): Allowing or suggesting heat relief.
(adjective): Of a color, in the range of violet to green.
(adjective): Of a person, not showing emotion; calm and in control of oneself.
(adjective): Unenthusiastic, lukewarm, skeptical.
(adjective): Calmly audacious.
(adjective): Applied facetiously to a sum of money, commonly as if to give emphasis to the largeness of the amount.
(adjective): Of a person, knowing what to do and how to behave; considered popular by others.
(adjective): In fashion, part of or fitting the in crowd; originally hipster slang.
(adjective): Of an action, all right; acceptable; that does not present a problem.
(adjective): Of a person, not upset by circumstances that might ordinarily be upsetting.
(adjective): Quietly impudent, defiant, or selfish; deliberately presuming: said of persons and acts.
(noun): Anything which cools.
(noun): An insulated bin or box used with ice or freezer packs to keep food or beverages cold while picnicking or camping.
(noun): A device for refrigerating dead bodies in a morgue.
(noun): A mixed drink, especially one served chilled.
(noun): A prison.
(noun): A cold deck.
(noun): A bouncer or doorman.

Linen has made cool and breathable clothing for millennia.
If you have a reddish complexion, you should mainly wear cool colors.
His proposals had a cool reception.
In control as always, he came up with a cool plan.
Is it cool if I sleep here tonight?