The most common and most likely answer to this crossword clue is the 8 letter word FEVERISH
I've seen this crossword clue in The Guardian
F
E
V
E
R
I
S
H
More clues leading to the result FEVERISH
- Frenzied English priest retires, taken in by pope, perhaps
- Hot swimmer is accommodating at any time
- Frantic swimmers lapping incessantly
- Seafood keeping always hot ...
- In search for compliments maybe, always a bit frenzied
- Putting out fire, he’s briefly very hot and bothered?
- . May be tuna sandwiches always hot
- Continually disrupting search, getting frantic
- Excited swimmer is eating continually
- Woman at all times is hot and restless
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 = feverish.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 FEVERISH mean?
FEVERISH adjective- Having a fever, an elevated body temperature.
- Filled with excess energy.
- Morbidly eager.