Set sail is a common phrase used to describe the act of starting a sailboat's journey. However, there are several synonyms that can be used instead of this phrase. Some of the common alternatives include hoist the sails, raise the anchor, cast off, depart, embark, launch, push off, shove off, and take off. Each of these synonyms has its unique connotations, such as departure, starting, and journey, and can be used in various contexts for different effects. Choosing the right synonym can add depth and nuance to your writing or conversation and help avoid repetition of the same phrase over and over again.