Related Clues:
- Enemy of international environmental group
- Enemy following old European
- Sentry's ''Stop!'' order
- Hardly a friend
- "Stop there!"
- Ares, to Wonder Woman
- Luthor, to Superman
- A Stark, to a Lannister, on 'Game of Thrones'
- Athleisure, e.g
- Non-friend
- Focus of one's enmity
- Enemy in sports
- Situation depicted at 39-Across
- Strong competitor going against you
- Doctor Octopus, to Spidey