fraudulence (n.)youdaoicibaDictYouDict
"deceit," c. 1500, from Middle French fraudulence, from Latin fraudulentia, from stem of fraus (see fraud).
fraudulent (adj.)youdaoicibaDictYouDict
early 15c., from Old French fraudulent, from Latin fraudulentus "cheating, deceitful, dishonest," from stem of fraus "deceit" (see fraud). Earlier was fraudful (c. 1400). The Old French word was fraudios. Related: Fraudulently.