coutumieradjectivecommon nounSyllable DecompositioncoutumierEtymologyexpandcomposed of custom and -ier. the common noun appears in the fourteenth century. etymological doublet of costumier.Definition1. A collection of the customs of a province or country.expandAu XIVe siècle, le liber practicus de consilio Remensi n° 36 et les coutumiers de Champagne considèrent le mariage comme émancipant.PluralcoutumiersTranslationsenglish:custumal