Stay, being prepared with bib? (7)
I believe the answer is:
babysit
'stay being prepared with bib?' is the definition.
I can't tell whether this defines the answer.
'stay being prepared with bib?' is the wordplay.
'being prepared with' indicates an anagram.
'stay' with its letters mixed up with 'bib' can make 'BABYSIT'.
(Other definitions for babysit that I've seen before include "Mind" , "Tend to kid" , "Take charge to allow parents to go out" , "Look after children temporarily" , "Supervise in loco parentis" .)