"Opened up" is a commonly used phrase to describe something that has been made accessible or available. However, there are many synonyms that can be used to convey the same meaning. Some synonyms for "opened up" include revealed, uncovered, disclosed, exposed, made known, accessible, and available. These words can be used when describing anything from a new business opportunity to a blossoming friendship. Choosing the right synonym can add depth and clarity to your writing, so it is important to consider your options when searching for the perfect term to describe something that has been opened up.