Ready up is a phrase commonly used in gaming, but it can also have other applications, such as preparing for a mission or commencing an activity. Some synonyms for ready up include "prepare," "gear up," "get set," "prime," "set up," and "brace oneself." "Prepare" denotes getting ready for an event or activity, whereas "gear up" suggests getting ready for a more physical task. "Get set" means preparing oneself either mentally or physically, while "prime" implies getting ready for a specific task or performance. "Set up" involves arranging things in preparation, and "brace oneself" suggests getting ready for something potentially difficult or intense. Using these synonyms, one can effectively communicate readiness for any situation.