Ignore the scare tactics! If you've decided to learn Czech, the first thing that other learners or (especially) natives may do is tell you how hard it is. It's got 7 cases, unpronounceable consonant clusters, irregular plurals, unrecognisable vocabulary, the hard-to-pronounce letter Å, lions and tigers and bears, oh my!!!
Definition of villainous. 1a : befitting a villain (as in evil or depraved character) a villainous attackb : being or having the character of a villain : depraved the villainous foe.
Nemesis is a stronger word than enemy. Enemy is an unfriendly or hostile person. Nemesis is an avenging force. In classical mythology Nemesis was the goddess of retribution. She punished both hubris (false pride) and wrongdoing. The goddess represents the idea that one cannot escape divine retribution.