Impertinence, impudence (9)
I believe the answer is:
insolence
I believe this is a double definition.
'impertinence' is the first definition.
(I know that impertinence can be written as insolence)
'impudence' is the second definition.
(I know that impudence can be written as insolence)
(Other definitions for insolence that I've seen before include "Sauce" , "freshness" , "Front" , "Cheek, irreverence" , "Disrespectful behaviour" .)