Cryptic crossword clue
Rebuilding a bomb site could be confusing 14

The most common and most likely answer to this crossword clue is the 14 letter word DISCOMBOBULATE

I've seen this crossword clue in The Daily Telegraph
D
I
S
C
O
M
B
O
B
U
L
A
T
E

Buddy explains!

The straight part
We know that "be confusing" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case be confusing = discombobulate.
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 DISCOMBOBULATE mean?

DISCOMBOBULATE verb
  1. To throw into a state of confusion; to befuddle or perplex.

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