Synonyms for Cheek (same or very similar meaning)
WordNet sense 1 (an impudent statement):
impertinence, impudenceWordNet sense 2 (either of the two large fleshy masses of muscular tissue that form the human rump):
buttockWordNet sense 3 (impudent aggressiveness):
boldness, brass, face, nerveFrom the ODE community, based on WordNetadd/edit