The most common and most likely answer to this crossword clue is the 9 letter word PLUG-UGLY
P
L
U
G
-
U
G
L
Y
Buddy explains!
The straight part
We know that "unattractive" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case unattractive = plug-ugly.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 PLUG-UGLY mean?
PLUG-UGLY adjective- Very ugly.