Imagine or suppose (7)
I believe the answer is:
suspect
I believe this clue is a double definition.
'imagine' is the first definition.
(I know that suspect is a type of imagine)
'suppose' is the second definition.
(I know that suspect is a type of suppose)
(Other definitions for suspect that I've seen before include "One believed responsible" , "Have misgivings about" , "Have reason to believe" , "Hazard a guess" , "Possible perpetrator of a crime" .)