Pally with everyone (3)
I believe the answer is:
all
'everyone' is the definition.
(all people)
'pally with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'ALL' is hidden in the letters of 'pally'.
(Other definitions for all that I've seen before include "nothing more" , "SECOND PART OF 8" , "Fully clad ..." , "that's as many as there are" , "100%" .)