State without proof (6)
I believe the answer is:
allege
'state without proof' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for allege that I've seen before include "Accuse without established proof" , "Aver (without proof)" , "Declare without being able to prove" , "Claim (a person is guilty)" , "Declare or accuse without proof" .)