Coapply is a verb that means to apply or submit together with another person or entity. There are several synonyms for coapply that can be used depending on the context and situation. Some examples of synonyms for coapply include collaborate, partner, team up, join forces, cooperate, and work together. These words all imply a joint effort that is aimed at achieving a common goal or objective. Other synonyms for coapply include unite, bind, merge, combine, and join. These words suggest that two or more parties are coming together to create a unified entity or to pool their resources for a shared purpose or benefit.