Registered is a word used to refer to something that has been officially recorded or recognized. However, there are many synonyms available for this word that can help you avoid repetition in your writing. Some common synonyms for registered include certified, recorded, validated, accredited, authorized, certified, enrolled, inscribed, listed, recorded, and certified. Each of these words has a slightly different connotation, so depending on the context in which you are using them, you can choose the one that fits best. Using synonyms for common words like registered is a great way to add variety to your writing and make it more interesting and engaging.