Impudence one has to face (5)
I believe the answer is:
cheek
'impudence' is the definition.
(I know that impudence can be written as cheek)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for cheek that I've seen before include "Informal impertinence from side of face" , "on one's face?" , "Disrespectful talk" , "Effrontery" , "lip, or nearby part of head" .)