Crossword Genius

Neighbouring cast end act without approval from Berlin (8)

Ross

I believe the answer is:

adjacent

I'm a little stuck... Click here to teach me more about this clue!

'neighbouring' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for adjacent that I've seen before include "cheek by jowl" , "Contiguous" , "Neighbouring" , "Next-door" , "Lying near or next (to)" .)

I've seen this clue in the Sydney Morning Herald.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.