Regularly force feed tommy with permission (7)
I believe the answer is:
freedom
'permission' is the definition.
(thesaurus)
'regularly force feed tommy' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'force'+'feed'+'tommy'='forcefeedtommy'
The alternate letters of 'forcefeedtommy' are 'FREEDOM'.
'with' is the link.
(Other definitions for freedom that I've seen before include "Political militant" , "Liberty, civil liberty" , "Liberation" , "Power to act without restraint" , "novel" .)