Cryptic crossword clue
Rubens’ ideal strangely not appealing 11

The most common and most likely answer to this crossword clue is the 11 letter word UNDESIRABLE

I've seen this crossword clue in The Daily Telegraph
U
N
D
E
S
I
R
A
B
L
E


Buddy explains!

The straight part
We know that "not appealing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case not appealing = undesirable.
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 UNDESIRABLE mean?

UNDESIRABLE noun
  1. An undesirable person
UNDESIRABLE adjective
  1. Objectionable or not likely to please

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