Rude man is crazy for nanny (9)
I believe the answer is:
nursemaid
'for nanny' is the definition.
(both can mean someone who looks after children)
'rude man is crazy' is the wordplay.
'crazy' is an anagram indicator.
'rude'+'man'+'is'='rudemanis'
'rudemanis' anagrammed gives 'NURSEMAID'.
(Other definitions for nursemaid that I've seen before include "Childminder" , "child minder" , "Girl tending young children" , "female carer" , "tender" .)