Proto-IE: *pāp-
Meaning: bad, misfortune
Hittite: paprant- 'unrein', paprai- 'sich verunreinigen, sich versündigen' (Friedrich 158)
Old Indian: pāpá-, pā́pa- `bad, vicious, evil', pāpmán- m. `evil, misfortune'
Armenian: hivand `schwach, krank', an-hivand `sanus'
Russ. meaning: плохой/беда
References: WP II 8 f