I really like the word “cool.” I use it and so does almost everyone else. It’s been popular for years, outlasting most other “hip” terms for more than 50 years. Hipsters still use it. Business people use it. Four-year-olds use it.
I’m collecting information on the word and will eventually have something original to say.
In the mean time, check this out: http://www.slate.com/articles/life/cool_story/2013/09/the_history_and_future_of_cool_what_does_the_term_mean_in_2013.html
The title is reference to a popular and ground breaking Miles Davis 1957 jazz album “Birth of the Cool”