Doctor is clad by a colleague to prepare for theatre (9)
I believe the answer is:
dramatise
'colleague to prepare for theatre' is the definition.
I can't tell whether this definition defines the answer.
'doctor is clad by a' is the wordplay.
I cannot really understand how this works, but
'doctor' could be 'dr' (abbreviation) and 'dr' is found within the answer.
'is' is within the answer.
'by' could be 'at' and 'at' is located in the answer.
'a' is present in the answer.
The remaining letters 'me' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dramatise that I've seen before include "adapt for TV" , "Make out to be exciting or important" , "prepare for the stage" , "Overstate" .)