Impute, assign (7)
I believe the answer is:
ascribe
I believe this is a double definition.
'impute' is the first definition.
(I know that impute can be written as ascribe)
'assign' is the second definition.
(I know that assign can be written as ascribe)
(Other definitions for ascribe that I've seen before include "'Attribute, assign (7)'" , "'Impute, assign (7)'" , "Attribute (something to a cause)" , "Attribute in Brescia" , "Attribute or impute" .)