unthankful
英['ʌn'θæŋkfəl] 美[ʌn'θæŋkfəl]
"ungrateful heirs"
"How sharper than a serpent's tooth it is / To have a thankless child!"
For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy.
因为那时人要专顾自己,贪爱钱财,自夸,狂傲,谤讟,违背父母,忘恩负义,心不圣洁。