The phrase "stand available" can take on a few different meanings, depending on the context. However, some synonyms that may be used in place of "stand available" could include "ready," "accessible," "at hand," "on call," "prepared," "open for service," or "waiting in the wings." For example, if someone is "standing available" to help with a task, they may also be "ready" or "accessible" to assist. Likewise, if a company has customer service representatives who are always available to help, they may be "on call" or "open for service" at all times. Choosing the most appropriate synonym will depend on the specific situation and the desired tone or emphasis.