nemesis
noun [ˈnɛməsəs]
A nemesis is a formidable foe—an opponent or enemy who is very difficult to defeat. As a proper noun, Nemesis refers to the Greek goddess of vengeance.
Nemesis was the Greek goddess of vengeance, a deity who doled out rewards for noble acts and punishment for evil ones.
In English, nemesis originally referred to someone who brought a just retribution, but nowadays people are more likely to see simple animosity.
English
Optimized studying based on the forgetting curve vastly improves memorization. - What is reminDO?
Memorize
