Fresh nurses start to re-examine rash (9)
I believe the answer is:
imprudent
'rash' is the definition.
(similar in meaning)
'fresh nurses start to re-examine' is the wordplay.
I cannot really understand how this works, but
'fresh' could be 'rude' (I've seen this in another clue) and 'rude' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for imprudent that I've seen before include "Unwise" , "Incautious" , "Reckless" , "Without forethought" , "'making the wrong choices'?" .)