The most common and most likely answer to this crossword clue is the 7 letter word VICIOUS
V
I
C
I
O
U
S
More clues leading to the result VICIOUS
- Cruel when in France you set about old company
- Dangerous, having you around here in Paris!
- Clergyman promises to be cruel
- Brutal emperor’s final word of dominance over us
- 61001-0 to us – achieved with malice
- Winning eminence is out to be nasty
- Cruel French here? You must provide cover
- Spiteful Tim leaving sufferer with debts
Buddy explains!

The straight part
We know that "Dangerous" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dangerous = vicious.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 VICIOUS mean?
VICIOUS adjective- Violent, destructive and cruel.
- Savage and aggressive.
- Pertaining to vice; characterised by immorality or depravity.