Answer: nemeses

AnswerCrossword Clue
NEMESESThose imposing retribution
NEMESESFormidable foes
NEMESESBatman and Robin, to Catwoman
NEMESESPlan foilers, perhaps
NEMESESSuperheroes, to villains
NEMESESArchenemies, maybe
NEMESESThey give comeuppances
NEMESESThorns in one's side
NEMESESInflicters of retribution
NEMESESTough rivals
NEMESESSee men's foes
NEMESESRivals to who one always loses
NEMESESAvengers
NEMESESRetributions.
NEMESESJust deserts.
NEMESESJust retributions.
NEMESESFates.
NEMESESInflicters of tribulation.
NEMESESLike Batman and Robin to the Joker
NEMESESArch enemies
NEMESESFierce foes
NEMESESUnbeatable archenemies
NEMESESFormidable rivals
NEMESESThe Ravens, to the Steelers
NEMESESThe Steelers, to the Ravens
NEMESESHolmes and Moriarty, e.g.
NEMESESAgents of undoing
NEMESESYou can't beat them
NEMESESFearsome foes
nemesesNEMESIS, an unbeatable opponent
nemesesThe inescapable or implacable agent of someone's or something's downfall
nemesesA downfall caused by such an agent
nemesesRetributive justice
NEMESESWaterloos
NEMESESUnbeatable foes
NEMESESUsually unbeatable rivals
NEMESESThey can't be beaten
NEMESESUnbeatable rivals
NEMESESLuthor and Brainiac, to Superman
NEMESESThey're unbeatable