Music How Did The Word ‘Cool’ Stay Cool For So Long? Here You Go. Cool. Jul 28, 2018 FacebookTwitterPinterestWhatsAppLinkedinReddItEmailPrint It’s hep, it’s groovy, it’s outta sight. It’s the word ‘cool.’ It’s not only all of those other things, but unlike those other words, it doesn’t sound dated at all. Slang hardly ever manages that trick. How did ‘cool’ stay cool?