"disgusting appearance" is a correct and usable phrase in written English.
It is typically used to describe something that is very unattractive or repulsive in appearance. Example: The food was inedible and had a disgusting appearance, with mold growing on it.
According to his blog, McAfee disguised himself by colouring his hair and beard grey, darkening his face with shoe polish, padding his cheeks with bubble gum and stuffing his right nostril to give it - in McAfee's own words, "an awkward, lopsided, disgusting appearance".
Humiliated, Meg blames Lois for ruining her relationship (even though it was her disgusting appearance that repulsed him so much) and runs away to her room, sobbing.
Do not make it look "disgusting" in appearance.
They are repulsive in appearance and disgusting in their manners.
The editor of the Bellingham Reveille, in Washington, described Hindus as "repulsive in appearance and disgusting in their manners," and, in 1907, the entire South Asian population was forced out of Bellingham in a single night with cries of "Drive out the Hindus".
At the same time, he was becoming increasingly convinced that his father's remoteness was less a sign of disinterest in him than outright disgust: disgust in his physical appearance, disgust in his lack of athletic prowess.
Sometimes we may be too busy to notice, but other times we may feel downright disgusted with our appearance.
I mean it's disgusting" he asked during his appearance on Fox and Friends.
In 2006, during an appearance on Entertainment Tonight, Trump said she was "disgusting, both inside and out.
This explains the appearance of tautology in the specification any formal object (I am disgusted because it is disgusting); but it is also, in part, what allows us to speak of emotions being appropriate or inappropriate.
