Strictly or harshly (8)
I believe the answer is:
severely
I believe this clue is a double definition.
'strictly' is the first definition.
(thesaurus)
'harshly' is the second definition.
(I've seen this before)
(Other definitions for severely that I've seen before include "Intensely; harshly" , "in a very plain style" , "In rigorous, exacting manner" , "With sternness" , "Strictly, harshly" .)