The term 'hyped up' is commonly used to describe excessive excitement or energy. Synonyms for this word can include 'amped up', 'energized', 'excited', 'stimulated', 'agitated', 'jittery', 'overexcited', 'pumped', and 'revved up'. Each of these words has slightly different connotations and can be used in varying contexts. For instance, 'amped up' might be used to describe a rock concert audience, while 'jittery' might signify nervousness. Understanding these nuances and using the appropriate synonym can add depth and precision to one's writing or speech.