obfuscation (n.)youdaoicibaDictYouDict[obfuscation 词源字典]
early 15c., originally medical, "the darkening of a sore," from Latin obfuscationem (nominative obfuscatio), noun of action from past participle stem of obfuscare (see obfuscate).[obfuscation etymology, obfuscation origin, 英语词源]