nemesis
['nɛməsɪs]
nemesis
nemeses
[ noun ]

1. (Greek mythology) the goddess of divine retribution and vengeance

<noun.person>

2. something causing misery or death

<noun.state>
the bane of my life

Nemesis \Nem"e*sis\ (n[e^]m"[-e]*s[i^]s), prop. n. [L., fr. Gr.
Ne`mesis, orig., distribution, fr. ne`mein to distribute. See
{Nomad}.] (Class. Myth.)
The goddess of retribution or vengeance; hence, retributive
justice personified; divine vengeance.

This is that ancient doctrine of nemesis who keeps
watch in the universe, and lets no offense go
unchastised. --Emerson.