The most common and most likely answer to this crossword clue is the 4 letter word CRUD
C
R
U
D
Buddy explains!
The straight part
We know that "It’s revolting" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case it’s revolting = crud.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 CRUD mean?
CRUD noun- Dirt, filth or refuse.
- (by extension) Something of poor quality.
- A contemptible person.
- Mixed impurities, especially wear and corrosion products in nuclear reactor coolant.
- A heavy wet snow on which it is difficult to travel.
- Feces; excrement.
- Venereal disease, or (by extension) any disease.
- A fast-paced game, loosely based on billiards or pool, with many players participating at the same time.
- Non-vulgar interjection expressing annoyance, anxiety, etc.; sugar, damn.