Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

951. Impenitence — N. impenitence, irrepentance†, recusance†; lack of

contrition. hardness of heart, seared conscience, induration, obduracy. V. be impenitent &c adj.; steel the heart, harden the heart; die game, die and make no sign, die unshriven, die without benefit of clergy. Adj. impenitent, uncontrite, obdurate; hard, hardened; seared, recusant; unrepentant; relentless, remorseless, graceless, shriftless†. lost, incorrigible, irreclaimable. unreconstructed, unregenerate, unreformed; unrepented†, unreclaimed†, unatoned.