For the noun: nemesis
Plural form: nemeses

WordReference Random House Learner's Dictionary of American English © 2015
nem•e•sis /ˈnɛməsɪs/USA pronunciation n. [countable],pl. -ses/-ˌsiz/.USA pronunciation a source or cause of harm or failure:The driving test was her nemesis; she failed it repeatedly. an opponent or rival that cannot be overcome:That pitcher was our team's nemesis; every time he faced us we lost. an agent of punishment for wrongdoing.

Collins Concise English Dictionary © HarperCollins Publishers::

Nemesis /ˈnɛmɪsɪs/ n ( pl -ses / -ˌsiːz/)
  1. the goddess of retribution and vengeance
  2. (sometimes not capital) any agency of retribution and vengeance
Etymology: 16th Century: via Latin from Greek: righteous wrath, from némein to distribute what is due

'nemesis' also found in these entries:

Download free Android and iPhone apps

Android AppiPhone App
Report an inappropriate ad.