Cryptic crossword clue
Tense, working to seal one fault 12

The most common and most likely answer to this crossword clue is the 12 letter word IMPERFECTION

I've seen this crossword clue in The Daily Telegraph
I
M
P
E
R
F
E
C
T
I
O
N


Buddy explains!

The straight part
We know that "fault" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fault = imperfection.
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 IMPERFECTION mean?

IMPERFECTION noun
  1. Those qualities or features that are imperfect; the characteristic, state, or quality of being imperfect.
  2. Something that makes something else less than perfect; a blemish, impurity, error, etc.

Latest crossword clues with full explanations