fremesis means an arch frenemy. Lexicurio rates it Sui generis — a strength score of 93 out of 100.
noun
- An arch frenemy.““We’re not best friends, Millie.” “Right, I’m your nemesis—we love each other, but we’ve got some history.” “You’re not my nemesis.” “We are, we’re nemesises...es. We’re rivals who are also totally obsessed with each other—‘fremesises.’” “Oh, like Batman and Catwoman.” “And like socks and sandals.””