👉 Grandbaby is a title given to a child who is two years old or older, and it typically refers to someone who has reached their full adult development stage. The term "grandbaby" can also be used to refer to a person who is not yet an adult but is considered part of the family, such as a grandparent or great-grandparent. In some cases, this title may be used to refer to someone who is still in their early childhood or adolescence.