DictionarynemesisPersistent rival
noun

nemesis

NEM-uh-sis/ˈneməsɪs/

A long-standing opponent who repeatedly causes defeat.

The composed opponent is the chess player's nemesis, defeating him in every encounter.

A text-free three-panel sequence shows the same chess player repeatedly defeated by the same composed opponent.
Etymology

Greek nemesis expressed the distribution of what was due, especially divine retribution, personified as a goddess. From this sense of inescapable reckoning came the modern nemesis: a rival or force that seems destined to defeat someone.

In context

Arkham666440:11
Kua is a true nemesis. Not just a powerful enemy, but a dark reflection of our hero.
The PS1 Final Fantasy trilogy Retrospective: why we still love them.

More examples

  • Even after months of practice, I lose to my chess nemesis.
  • She finally beats her nemesis after five straight losses.
  • The two runners become his nemeses, beating him race after race.

Forms

nemesis · nemeses

Similar words

rival
Competes for the same goal without necessarily causing repeated defeats.
archenemy
Emphasizes deep hostility rather than a record of repeated victories.