I. noun — (usu. the Antichrist) 1. (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.
2. 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.
3. a person or thing regarded as supremely evil or as a fundamental enemy or opponent • they regard feminists like me as the Antichrist.
– origin Old English, via Old French or ecclesiastical Latin from Greek antikhristos, from anti ‘against’ + Khristos (see Christ).