(in some Christian teachings) a personal opponent of Christ expected to appear before the end of the world.
"the battle between Christ and the Antichrist"
a person or force seen as opposing Christ or the Christian Church.
"St. Paul really did have to fear for his life at the hands of an Antichrist named Nero"
a person or thing regarded as supremely evil or as a fundamental enemy or opponent.
"they regard Atheists like me as the Antichrist"