Antichristianism refers to the opposition or hostility towards Christianity. Some common synonyms for this term include atheism, agnosticism, secularism, and irreligion. These words describe a lack of belief in or rejection of the principles and doctrines of Christianity. Other synonyms for Antichristianism include skepticism, cynicism, and nihilism, which describe a general distrust or disbelief in any religious or moral principles. Some may also use the term anti-theism, which refers specifically to opposition to the belief in any deity or deities. All of these terms illustrate the concept of disbelief or opposition towards Christian beliefs and principles.