Nurse dent carelessly (4)
I believe the answer is:
tend
'nurse' is the definition.
(thesaurus)
'dent carelessly' is the wordplay.
'carelessly' is an anagram indicator.
'dent' with letters rearranged gives 'TEND'.
(Other definitions for tend that I've seen before include "Incline; cultivate" , "Look after, or take certain direction" , "Look after - there's a dent in it" , "Minister" , "Be inclined - look after" .)