idioms and axioms with hot/cool

Hot

Very desirable, trendy

“Please order another 1,000 red handbags from the factory immediately, Naoko-san. Red is really hot this year.”

Hot

Stolen

“Yamada-san didn't buy the brand-name watch from the street vendor because she knew it was hot.”

Cool

Fashionable, desirable

“Teenagers think surfing is a very cool sport.”

Cool toward

Uninterested in

“The department store buyers were very cool toward the designer's new swimwear collection.”

Warm to

To become comfortable with, interested in

“The president warmed to his secretary's suggestion once he realized how much money it would save.”