Ma'anar ƙamus na kalmar "decipherer" shine mutumin da yake warwarewa ko fassara wani abu mai wuya ko sirri, musamman codeed ko rufaffen saƙo ko rubutu. Ma’ana, ma’adanin fassara shi ne wanda ke da ikon fahimta da yanke bayanan da ba a iya fahimta ko samun damar wasu. Ana yawan amfani da wannan kalmar a fagen cryptography ko code-breaking, inda ake horar da masu tantancewa don warware saƙon da aka ɓoye ko lambobin.