Risk husband blocking free entertainment (6)
I believe the answer is:
threat
'risk' is the definition.
(I've seen this before)
'husband blocking free entertainment' is the wordplay.
'husband' becomes 'h'.
'blocking' indicates putting letters inside.
'free entertainment' becomes 'treat' (as in treating someone to dinner).
'h' placed inside 'treat' is 'THREAT'.
(Other definitions for threat that I've seen before include "Indication of danger" , "Declaration of intention to harm another" , "The rat became a menace" , "Menacing words" , "Menace of impending evil" .)