Leave the sick inside and be undecided? (9)
I believe the answer is:
vacillate
'be undecided?' is the definition.
I can't judge whether this defines the answer.
'leave the sick inside' is the wordplay.
'leave' becomes 'vacate' (to vacate a place is to leave it).
'the sick' becomes 'ill' (I've seen this in another clue).
'inside' is an insertion indicator.
'vacate' placed around 'ill' is 'VACILLATE'.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for vacillate that I've seen before include "Shilly-shally" , "Be irresolute" , "Be unsteady" , "Dither" , "indecisive" .)