At home with everyone, taken together (2,3)
I believe the answer is:
in all
'taken together' is the definition.
(I've seen this before)
'at home with everyone' is the wordplay.
'at home' becomes 'in' (similar in meaning).
'with' is a charade indicator (letters next to each other).
'everyone' becomes 'all' (all people).
'in'+'all'='IN ALL'
(Other definitions for in all that I've seen before include "Altogether" , "Everything considered" , "Summarising" , "Taken together" , "without exception" .)