The most common and most likely answer to this crossword clue is the 7 letter word EYESORE
I've seen this crossword clue in The Times
E
Y
E
S
O
R
E
More clues leading to the result EYESORE
- Ultimately horrible indeed — mineral that’s not nice to see
- Ugly sight I witnessed in the auditorium
- Looks round about, finding something very ugly
- What spoils the view at heart of storm is very concerning
- Horrendous sight was witnessed by me, it's said
- Viewer hurt: it doesn't look good
- I shoot up, we hear, in very ugly building
- Something ugly I observed in conversation
- Looks round about — not a pretty sight
- Last of these rather tangle in places causing a mess
Buddy explains!

The straight part
We know that "something very ugly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case something very ugly = eyesore.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 EYESORE mean?
EYESORE noun- An eye lesion.
- A displeasing sight; something prominently ugly or unsightly.