seigneurcommon nouninterjectionproper nounSyllable DecompositionseigneurEtymologyexpandfrom Old French seignor, oblique case of sendra (Strasbourg Oaths), which goes back to Latin seniōrem, accusative of senior 'elder, older'.Definition1. Term used as a euphemism for the majority of curses and swear words.flags.QuébecexpandSynonymsmauditsaintecalvâssecalvincetabarouetteAnagramseringueSee alsoseigneur (cn.)