Unstable movie character? (5)
I believe the answer is:
rocky
'unstable' is the definition.
(similar in meaning)
'movie character?' is the wordplay.
I cannot really see how this works, but
'character?' could be 'y' and 'y' is present in the answer.
The remaining letters 'rock' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for rocky that I've seen before include "Craggy; difficult" , "Characterised by large stones" , "Hard - unstable" , "Unstable US mountain range?" , "Wobbling" .)