Definition of prig noun from the Oxford Advanced American Dictionary

 

prig

 noun
noun
NAmE//prɪɡ//
 
(disapproving)
 
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a person who behaves in a morally correct way and who shows that they disapprove of what other people do
NAmE//ˈprɪɡɪʃ//
 
adjective He was in danger of becoming priggish and opinionated.
priggishness
 
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noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: prig