The phrase "gets with it" refers to someone who is up-to-date with the latest trends and technologies. The antonyms for this phrase may include words like outdated, obsolete, behind the times, or out of touch. A person who is not "with it" may be described as out-of-touch, clueless, or unaware. They may be resistant to change or have a fear of adopting new ideas or technology. It is important to remember that being "with it" is not necessarily a measure of intelligence or capability, but rather a willingness to adapt and embrace new things.