mortal enemy

Deadly lifelong adversary

A mortal enemy is an enemy so profound that only death can end the conflict—each side threatens the other's very existence.

The phrase often appears in dramatic or hyperbolic contexts: Batman and the Joker are mortal enemies.

In casual use, it can describe any intense rivalry: She considers her sister's ex her mortal enemy.

Related

Cain and Abel · antagonist · animosity · sabotage · malice · nemesis · arch rival · bitterness · spite · vendetta · to the death · fight to the finish · blood feud · bad blood · old grudge · betrayal · confrontation · adversary

Categories
Opposites
interpersonal relationship valence

mortal enemybest friend

Most trusted companion

soulmate · beloved · bosom friend · kindred spirit · trusted companion

threat level

mortal enemyprotector

One who safeguards others

savior · guardian angel · defender · guardian · benefactor

loyalty and allegiance

mortal enemytrue believer

Completely committed adherent

faithful servant · loyal friend · blood brother · faithful companion · devoted follower

Family

mortal, enemy, mortality, mortally, immortal, immortality, mortify, mortification, mortician

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Negative · Everyday, not technical · Rated PG