The answers to the clues below will have something in common.

 

1. Spying

2. Retinue

3-4. Banter, witty conversation (2 words)

5. A low neckline on a woman's dress

6. Disguising something so as to blend in with its surroundings

7. Deliberate destruction - especially for military or political advantage

 

Answers: 

1. Espionage

2. Entourage

3. Badinage

4. Persiflage

5. Decolletage

6. Camouflage

7. Sabotage