Definition of prudhommie in US English:

prudhommie

noun

rare, historical
  • The character of a prudhomme; discretion, trustworthiness and loyalty, especially in relation to one's country or sovereign.

Origin

Late 15th century; earliest use found in William Caxton (1415x24–1492), printer, merchant, and diplomat. From Middle French preudhommie from preudhomme + -ie. In later use reborrowed from French.