What language did the word cool come from?

Answer 1

The word "cool", meaning lacking in warmth, comes from Old English. The slang term "cool" meaning hip or fashionable ("You are not cool enough to wear that outfit") is American slang - used originally in the fifties, and really hitting the mainstream in the sixties.

Answer 2

The word "cool" is believed to have originated from African American English in the early 1930s, derived from the West African Wolof language's word "khawl," which means "to be stylish." It gained popularity in American culture through jazz and became widely used to describe something fashionable or impressive.