Impenitent - Vine's Expository Dictionary of New Testament Words

Impenitent

[ 1,,G279, ametanoetos ]
lit., without change of mind" (a, negative, metanoeo, "to change one's mind," meta, signifying "change," nous, "the mind"), is used in Romans 2:5, "impenitent" (or "unrepentant"). Moulton and Milligan show from the papyri writings that the word is also used "in a Passive sense, 'not affected by change of mind,' like ametameletos in Romans 11:29," "without repentance."

Vine's Expository Dictionary of New Testament Words