prig
noun/prɪɡ/
/prɪɡ/
(disapproving)- a person who behaves in a morally correct way and who shows that they think what other people do is badWord Originmid 16th cent.: of unknown origin. The earliest sense was ‘tinker’ or ‘petty thief’, which led to the sense ‘disliked person’, especially ‘someone who is affectedly and self-consciously precise’ (late 17th cent.).
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prig