The most common and most likely answer to this crossword clue is the 6 letter word INVADE
I've seen this crossword clue in The Guardian
I
N
V
A
D
E
More clues leading to the result INVADE
- Railed aloud, as trespassers do?
- Bad idea to restrain navy against attack
- Storm in Virginia: ‘Lower classes should be in their proper place’
- Spoke with hostility to listeners, to make unwelcome advances
- Pointless dropping in with just first two of debutantes — come mob-handed!
- Jostle and vie to enter forcefully
- Attack condemned on the radio
- Overrun three American states
Buddy explains!
The straight part
We know that "attack/attack" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case attack/attack = invade.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 INVADE mean?
INVADE verb- To move into.
- To enter by force in order to conquer.
- To infest or overrun.
- To attack; to infringe; to encroach on; to violate.
- To make an unwelcome or uninvited visit or appearance, usually with an intent to cause trouble or some other unpleasant situation.