Admitting to going under in doctor’s absence (6)
I believe the answer is:
owning
'admitting' is the definition.
(I've seen this before)
'going under in doctor's absence' is the wordplay.
I cannot really see how this works, but
'in' is found in the answer.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Other definitions for owning that I've seen before include "Being in possession or confessing" , "Possesing" , "Admitting" , "Possessing" , "In legal possession of" .)