late Old English pryto, Kentish prede, Mercian pride "pride, haughtiness, pomp," from prud (see proud). There is debate whether Scandinavian cognates (Old Norse pryði, Old Swedish prydhe , Danish pryd, etc.) are borrowed from Old French (from Germanic) or from Old English. Meaning "that which makes a person or people most proud" is from c.1300. First applied to groups of lions late 15c., but not commonly so used until c.1930. Paired with prejudice from 1610s.
mid-12c. in the reflexive sense "congratulate (oneself), be proud," c.1200 as "be arrogant, act haughtily," from pride (n.). Related: Prided; priding.