cooler
/ˈkuːl.ə(ɹ)/
Having a slightly low temperature; mildly or pleasantly cold.
Allowing or suggesting heat relief.
Linen has made cool and breathable clothing for millennia.
Of a color, in the range of violet to green.
If you have a reddish complexion, you should mainly wear cool colors.
Of a person, not showing emotion; calm and in control of oneself.
Unenthusiastic, lukewarm, skeptical.
His proposals had a cool reception.
Calmly audacious.
In control as always, he came up with a cool plan.
Applied facetiously to a sum of money, commonly as if to give emphasis to the largeness of the amount.
Of a person, knowing what to do and how to behave; considered popular by others.
In fashion, part of or fitting the in crowd; originally hipster slang.
Of an action, all right; acceptable; that does not present a problem.
Is it cool if I sleep here tonight?
Of a person, not upset by circumstances that might ordinarily be upsetting.
I'm completely cool with my girlfriend leaving me.
Quietly impudent, defiant, or selfish; deliberately presuming: said of persons and acts.