Freedom from restraint shown by Penny's trite remark (9)
I believe the answer is:
platitude
'trite remark' is the definition.
(I've seen this before)
'freedom from restraint shown by penny's' is the wordplay.
'freedom from restraint' becomes 'latitude' (I've seen this before).
'shown by' means one lot of letters go next to another.
'penny' becomes 'p'.
'latitude' put after 'p' is 'PLATITUDE'.
(Other definitions for platitude that I've seen before include "that says nothing new" , "Trite or insincere remark" , "Commonplace remark uttered as if original" , "Trite observation" , "Commonplace remark, banal or trite" .)