Definition of cheeky adjective from the Oxford Advanced American Dictionary

 

cheeky

 adjective
adjective
NAmE//ˈtʃiki//
 
(cheekier, cheekiest)(informal)
 
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rude in an amusing or an annoying way a cheeky grin
NAmE//ˈtʃikəli//
 
adverb
 
noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: cheeky