The Big Bang Theory is a term that has become synonymous with the beginning of the universe. However, there are various alternative synonyms that can be used to describe this momentous event. Some of the popular synonyms for the Big Bang Theory include cosmic explosion, universal explosion, primordial explosion, and the birth of the universe. Other terms that can be used to describe this phenomenon include the initial singularity, the moment of creation, and the cosmic dawn. Regardless of the terminology used, the Big Bang Theory remains a fundamental concept in our understanding of the universe's origin and evolution.