The most common and most likely answer to this crossword clue is the 6 letter word ROUSED
R
O
U
S
E
D
Buddy explains!

The straight part
We know that "excited" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case excited = roused.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ROUSED mean?
ROUSED verb- To wake (someone) or be awoken from sleep, or from apathy.
- To cause, stir up, excite (a feeling, thought, etc.).
- To provoke (someone) to action or anger.
- To cause to start from a covert or lurking place.
- To pull by main strength; to haul.
- To raise; to make erect.
- (when followed by "on") To tell off; to criticise.