What is another word for getting big?
Pronunciation: [ɡˌɛtɪŋ bˈɪɡ] (IPA) 
There are numerous synonyms for the phrase "getting big," which can be used to describe a variety of situations. For instance, the term "growing" can be used to describe a child growing taller or a business expanding its operations. "Expanding" is another commonly used synonym that can describe a company growing in size or a town with new developments. "Increasing" is also a suitable synonym for "getting big" when discussing quantitative factors such as a company's profits or a town's population. Another option is "developing," which is often used to describe a person's skills or a city's infrastructure. In short, there are plenty of words to choose from when describing something that is "getting big.
