The story
- Proto-Indo-European · derived from*peh₁-“to hate; to hurt”
- Latin · derived fromimpaenitentem
- Middle English · inherited fromimpenitent“not penitent, unrepentant”
- English todayimpenitent
The adjective is derived from Late Middle English impenitent (“not penitent, unrepentant”), from Latin impaenitentem, the accusative feminine or masculine singular of impaenitēns (“unrepentant”), from im- (a variant of in- (prefix meaning ‘not’) + paenitēns (“contrite, penitent, regretting, repenting”) (the present active participle of paeniteō (“to be sorry, regret; to cause to repent; to repent”), from Proto-Indo-European *peh₁- (“to hate; to hurt”)). By surface analysis, im- + penitent. The noun is derived from the adjective.
Words from the same roots
Proto-Indo-European*peh₁- all →
Etymology from Wiktionary, CC BY-SA 4.0.