Withdraw pamphlet again first (7)
I believe the answer is:
retract
'withdraw' is the definition.
(I've seen this in another clue)
'pamphlet again first' is the wordplay.
'pamphlet' becomes 'tract' (synonyms).
'again' becomes 're' (prefix meaning 'again').
'first' is a charade indicator (letters next to each other).
'tract' put after 're' is 'RETRACT'.
(Other definitions for retract that I've seen before include "Withdraw (offer, statement etc)" , "Cancel" , "Revoke" , "Withdraw, take back" , "Eat one's words" .)