N is for Nemesis

: an enemy or opponent

“After all these years,” Lydia taunted as her nemesis swung helplessly above a pit of bubbling lava, “finally, I will be rid of you once and for all!” She pulled a giant lever and threw her head back in a fit of maniacal cackling. Her nemesis held his breath and waited for something dramatic to happen. But nothing did. At that point he was reminded of baseball.