Totally given a hiding, at last (2,3)
I believe the answer is:
in all
'totally' is the definition.
(I've seen this before)
'a hiding at last' is the wordplay.
I cannot quite understand how this works, but
'a' is found in the answer.
'at' could be 'in' and 'in' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'given' is the link.
Can you help me to learn more?
(Other definitions for in all that I've seen before include "With everything counted" , "Taken together" , "Everything considered" , "after considering everything" , "Taken as a whole" .)