Excessive; inappropriate (5)
I believe the answer is:
undue
I believe this is a double definition.
'excessive' is the first definition.
(I know this)
'inappropriate' is the second definition.
(similar in meaning)
(Other definitions for undue that I've seen before include "Beyond normal limits" , "too much" , "More than appropriate" , "Excessive, disproportionate" , "Excessively, unreasonably" .)