There are plenty of synonyms for the term "most expand" that we often use to describe growth or expansion. Some of the most common synonyms include soar, expand, grow rapidly, magnify, mushroom, increase, boom, develop, and spread. All these terms imply a growth or expansion in something. For instance, when we say a business is booming, we imply that it's expanding quickly or growing significantly. Similarly, when we say a company is thriving, we mean that it's flourishing and growing exponentially. Thus, depending on the context, we may use various synonyms to describe the pace or extent of growth or expansion.