The term 'REALLY EXCITED (ABOUT)' can be expressed in two words: ENTHUSED (8 letters) and INTO (4 letters). Enthusiasm is an emotion characterized by intense excitement, eagerness, and interest. It is often associated with a strong desire to do something or to be involved in something. The word 'INTO' implies that someone is deeply interested in something and is willing to invest their time and energy INTO it. Together, these two words express a strong level of enthusiasm and interest in something.