5 occurrences across the corpus

King James Version

Luke 6:35

But love ye your enemies, and do good, and lend, hoping for nothing again; and your reward shall be great, and ye shall be the children of the Highest: for he is kind unto the unthankful and to the evil.

2 Timothy 3:2

For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy,

KJV Apocrypha (Catholic Deuterocanon)

Wisdom of Solomon 16:29

For the hope of the unthankful shall melt away as the winters hoar frost, and shall run away as unprofitable water.

Sirach (Ecclesiasticus) 29:17

And he that is of an unthankful mind will leave him [in danger] that delivered him.

KJV Apocrypha (Eastern Orthodox Additions)

2 Esdras 8:60

But they which be created have defiled the name of him that made them, and were unthankful unto him which prepared life for them.