Enter a clue or pattern or both:
The Clue
Unbeatable foe (7 letter answer)
The Answer
NEMESIS
Tags
Notes
The answer NEMESIS is uncommon, appearing about once every 575 puzzles.
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Bête noire's relative
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Definition
NEMESIS as a noun:
1. (Greek mythology) the goddess of divine retribution and vengeance
2. (bane, curse, scourge, nemesis) = something causes misery or death; "the bane of my life"