Contempo is a slang word that originated in the US in the 1950s as an abbreviation for "contemporary." It refers to something that is modern, up-to-date, or fashionable. Antonyms for contempo include outdated, old-fashioned, ancient, obsolete, archaic, and vintage. These words describe things that are no longer in style or use, but may have historical or sentimental value. While contempo implies a sense of innovation and newness, its antonyms suggest something that is traditional, classic, or nostalgic. By understanding the antonyms of contempo, you can expand your vocabulary and better appreciate the nuances of language.