Suppose papa has to start again (7)
I believe the answer is:
presume
'suppose' is the definition.
(thesaurus)
'papa has to start again' is the wordplay.
'papa' becomes 'p' (phonetic alphabet: alpha, bravo, charlie etc.).
'has' says to put letters next to each other.
'to start again' becomes 'resume' (I've seen this before).
'p'+'resume'='PRESUME'
(Other definitions for presume that I've seen before include "Suppose without proof" , "Suppose; take liberties" , "Take for granted" , "Surmise" , "Believe" .)