dishonesty (n.)youdaoicibaDictYouDict[dishonesty 词源字典]
late 14c., "disgrace, shame, want of honor," from Old French deshonesté (13c.) "dishonor, impropriety," from des- (see dis-) + Latin honestatem "honorableness" (see honesty). Meaning "want of honesty" is recorded from 1590s.[dishonesty etymology, dishonesty origin, 英语词源]