The phrase "getting bigger" refers to an increase in size, quantity, or extent. There are several synonyms that can be used to convey this meaning. Some common options include "growing," which suggests a gradual increase over time, and "expanding," which implies a greater range or scope. "Increasing" is another useful synonym that can be paired with specific metrics, such as sales or profits. Other possible synonyms include "augmenting," "swelling," and "enlarging." Each of these words can be employed to describe a physical object, a quantity, or an abstract concept, depending on the context in which they are used.