Giving additional information is an essential part of communication. It helps to clarify, expand, and specify the message being conveyed. However, repeating the same phrase can make the information sound boring and monotonous. Therefore, it is always better to use synonyms to prevent the redundancy of words. A few of the synonyms for "give additional information" are "elaborate," "clarify," "enlighten," "expound," "exemplify," and "illustrate." All of these words mean to provide more details, explain further, or shed more light on a topic or subject. So, instead of using the same phrase repeatedly, try using these synonyms to add variety and depth to your communication.