prig

 
Pronunciation: /prɪg/

noun

  • a self-righteously moralistic person who behaves as if they are superior to others: she was religious but not a prig

Derivatives

priggery

noun

Origin:

mid 16th century: of unknown origin. The earliest sense was 'tinker' or 'petty thief', whence 'disliked person', especially 'someone who is affectedly and self-consciously precise' (late 17th century)