Cryptic crossword clue
King initially made mistake - nearly imprisoned by massive terrorist organisation 5,5

The most common and most likely answer to this crossword clue is the 5 plus 5 letter word KHMER ROUGE

I've seen this crossword clue in The Times
K
H
M
E
R
R
O
U
G
E

Buddy explains!

The straight part
We know that "terrorist organisation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case terrorist organisation = khmer rouge.
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.

Crossword Answer definitions

Latest crossword clues with full explanations