- FOE
- Adversary
- Hostile force
- Word in a sentry's question
- Thanos, to the Avengers
- Rival
- Frenemy, e.g.
- Enemy
- Opposition
- Poison Ivy, to Batwoman
- Any member of the other team
- Dr. Evil, to Austin Powers
- Goldfinger, to Bond
- One locked in mortal combat
- One locked into mortal combat, perhaps
- Opponent
- Sworn enemy, e.g.
- Frenemy, for one
- Bad guy
- Challenger
- Mortal enemy
- McCoy, to Hatfield
- No proponent
- Opposing team
- Sabretooth to Wolverine, e.g.
- Friend's opposite
- Hector, to Achilles
- Moriarty, to Holmes
- Paris, to Romeo
- Blofeld, to Bond
- Side against
- It's not for you
- Word heard at a checkpoint
- One faced
- Anti
- One to 48-Across with
- A shibboleth might weed one out
- One unfamiliar with a shibboleth, say
- One who's on the other line?
- Burr, to Hamilton
- Competitor
- Military enemy
- One on the other side
- Friend's alternative
- Grendel, to Beowulf
- Napoleon, to Wellington
- Antagonist
- End of a sentry's question
- Friend or ___?
- Dr. No, to 007
- One of "them"
- Dr. No, to Bond
- Game opponent
- Opposition member
- Cornwallis, to Washington
- Cassius, to Caesar
- The Riddler, to Batman
- Doctor Octopus, to Spider-Man
- Lee, to Grant
- Mr. Big, to James Bond
- Bugs Moran, to Al Capone
- Resistance unit?
- Hardly a friend
- Unfriend?
- Converse of chum
- Axis, to the Allies
- Catwoman, to Batman
- One not to trust
- Mr. Mxyzptlk, to Superman
- One opposed
- One who is against you
- One to beat
- Counter person?
- One who isn't behind you
- Sentry's word
- Hardly a follower
- Other side
- Grant, to Lee
- Hatfield, to a McCoy
- Them, often
- Nemesis, say
- Orc, to an Elf
- Sworn enemy
- One who isn't with us
- Goliath, to David
- A Capulet, to a Montague
- Malfoy, to Potter
- Them, vis-à-vis us
- Doctor Octopus, to Spidey
- Luthor, to Superman
- Nemesis, e.g.
- The Red Baron, to Snoopy
- Hook, to Pan
- Friend or __?
- Ill-wisher
- No ally
- No, to Bond
- Hostile opponent
- The other side
- Source of conflict
- Opposing side
- Word with etymology similar to "feud"
- Party one hopes is unsuccessful
- Competitive rival
- She's against you
- No pal of yours
- One against you
- One opposed to you
- Word related to "feud"
- Hostile party
- The Red Skull, to Captain America
- The Green Goblin, to Spider-Man
- Friend's antithesis
- One on the opposing side
- Battlefield target
- Hostile army
- Not a friend.
- The opposite side.
- An ill-wisher.
- See 19 Down.
- Hostile one
- Ill-willer
- Unfriendly one
- Pompey, to Caesar
- Wellington, to Napoleon
- Yamamoto, to Nimitz
- Darius III, to Alexander
- Hannibal, to a Roman
- Pawnee, to a Cheyenne
- Hannibal, to Scipio
- Howe, to G.W.
- Sulla, to Marius
- A McCoy, to a Hatfield
- Front de Boeuf, to Ivanhoe
- Tecumseh, to W. H. Harrison
- Crazy Horse, to Custer
- Expression of reproach
- Ney, to Wellington
- Cheyenne, to a Pawnee
- Hannibal, to Romans
- Iran, to Iraq
- Hannibal, to Scipio Africanus
- Hamilton, to 46 Down
- Saul, to Philistines
- Capulet, to Montague
- Giant's third word
- Friend or _____?
- Attacker
- Any Hatfield, to a McCoy
- Dangerous answer to a sentry
- Them
- Goliath, to David, e.g.
- Combatant
- This is a Montague, our ___: "Romeo and Juliet"
- Mailman, to a canine?
- The Axis, once
- Red, e.g., once
- Axis, once
- Bizarro, to Superman
- One against another
- One to counter
- One to go up against
- Scarecrow, to Batman
- The other army
- Goliath, e.g.
- Mothra or MUTO, to Godzilla
- Persians, to the 300, e.g.
- Philistines, to the Israelites
- 26-Across, to Maxwell Smart
- No friend
- One alternative of a sentry's challenge
- Who goes there, friend or ___?
- Auric Goldfinger, to James Bond
- Captain Hook, to Peter Pan
- Hostile
- One challenged by a sentry
- A Stark, to a Lannister, on "Game of Thrones"
- Dr. No, to James Bond
- Mr. Potter vis-à-vis George Bailey, in "It's a Wonderful Life"
- Loki, to Thor, often
- Royal Pain, to the Strongholds
- #1 spot, when you're #2
- Jay-Z "Friend or ___"
- Killmonger, to Black Panther
- Thanos, vis-à-vis Iron Man
- J. M. Coetzee novel based on, and rhyming with, "Robinson Crusoe"
- One who's decidedly not a friend
- Member of the opposition
- Darius, to Alexander
- Holyfield, to Lewis
- One not on your side
- Contender to your title
- Penguin, to Batman
- Friend's counterpart
- Giant, to Jack
- Contender for your title
- Friend's adversary
- Enemy or competition
- Shirts, to skins
- U-turn from friend
- Enemy in battle
- Erik Killmonger, to Black Panther
- The Joker, to Batman
- Continental Army soldier, to a redcoat
- Ares, to Wonder Woman
- Grant to Lee e.g.
- No friend of mine
- One in a battle scene
- Armed adversary
- Friend alternative
- A personal enemy
- Sworn rival
- The other team
- Contender, to a champion
- Challenger, to a champion
- Cheetah, to Wonder Woman
- Custer, to Sitting Bull
- Home team, to the away team
- Reb, to a Yank
- Syndrome, to the Incredibles
- Non-friend
- Mojo Jojo, to the Powerpuff Girls
- Opposite of friend
- But you're neither friend nor ___ / Though I can't seem to let you go ("Gravity" lyric)
- Doctor Doom, to the Fantastic Four
- Mysterio, to Spider-Man
- Doc Ock, to Spider-Man
- Natasha, to Rocky
- Sentry's classification
- Personal opponent
- Archrival
- Trojan, to a Greek soldier, in "The Iliad"
- Hatfield, to McCoy
- KAOS, to CONTROL
- Wrong answer to a sentry
- Oppositional figure
- The other guys
- Voldemort, to Harry Potter
- David, to Goliath
- Opposition figure
- Archnemesis
- Red Skull, to Captain America
- Opposing force
