The fear or condescension of programs and other operating information used by a computer which are not kept up to date, especially if the updates are freely accessible for the hardware currently in possession. From the Greek "phobos" meaning fear and the English "outdated" and "software" meaning outdated and software respectively.
A group of people who is unaware of what is trending now.
People who never heard of anything popular now.
Group of teenagers who never care of anything trending or wear any clothes from any popular stores, Only stuck with any clothes they want to wear and don't care.; Never follows the fashion trends.
Never heard of any top hits.
Is a teenager or kid but acts so old school.
Omg that person is so outdated! She tuck her shirt in, wore mom jeans, and wear dirty tennis shoes and they are not even J's! What is she?! 2005?!
He is so outdated, that he is unaware of anything popular on vine and he didn't even have a smartphone!