Change roles? (6)
I believe the answer is:
recast
'change' is the definition.
Although both the answer and definition are verbs in their base form, I cannot see how they can define each other.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for recast that I've seen before include "Give an actor a different role" , "Present in a different form" , "Put into a different form" , "reconstructed" , "given new form" .)