"Gat with it" is slang that is often used to mean "get on with it" or "hurry up". There are a number of synonyms for this phrase that can be used interchangeably in casual conversation. Some of the most common synonyms for "gat with it" include "get moving", "let's go", "pick up the pace", "speed up", and "move it". Each of these phrases is used to encourage someone to move more quickly and to get things done in a timely manner. Whether you are trying to motivate your friends to get ready more quickly, or encouraging a coworker to finish a task, these synonyms for "gat with it" can come in handy.