Cryptic crossword clue
Weakness, when it comes to lifting a kilo, meant wimp finally collapsed 11

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

I've seen this crossword clue in The Guardian
K
L
E
P
T
O
M
A
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A


Buddy explains!

The straight part
We know that "Weakness, when it comes to lifting" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case weakness, when it comes to lifting = kleptomania.
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 KLEPTOMANIA mean?

KLEPTOMANIA noun
  1. A psychological disorder that causes an uncontrollable obsession with stealing without economic or material need.

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