Cryptic crossword clue
Like a slender person that’s cunning, mean inside 7

The most common and most likely answer to this crossword clue is the 7 letter word WILLOWY

I've seen this crossword clue in The Daily Telegraph
W
I
L
L
O
W
Y

Buddy explains!

The straight part
We know that "Like a slender person" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case like a slender person = willowy.
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 WILLOWY mean?

WILLOWY adjective
  1. Resembling a willow.
  2. (of a person) Tall, slender and graceful.
  3. (of a place) Having willow trees.

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