The most common and most likely answer to this crossword clue is the 5 plus 5 letter word FEVER PITCH
I've seen this crossword clue in The Sunday Telegraph
F
E
V
E
R
P
I
T
C
H
More clues leading to the result FEVER PITCH
- Entering fine games field always brings state of excitement
- Vicar turning irrational, probing apparition in great excitement
- Female always quiet with desire shows great excitement
- Female continually yearning after Prince’s autobiography
- Female always going on field in state of exhilaration
- Get to catch mostly very good football film
- Tar applied after possible Covid symptom, producing a state of excitement
Buddy explains!
The straight part
We know that "state of exhilaration" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case state of exhilaration = fever pitch.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.