The phrase "gear up" is often used to describe getting ready or preparing for something, but there are many other words that can be used as synonyms. "Equip" is a great alternative, meaning to provide someone or something with the necessary tools or resources for a task. "Prepare" and "ready" can also be used in place of "gear up," signifying making necessary arrangements or getting something in a state of readiness. Other synonyms for "gear up" include "organize," "assemble," "arrange," "mobilize," "set up," and "harness." All of these words express the idea of getting something or someone ready for a particular action or event.