anti

When used as a prefix, "anti-" is often joined to the following word with a hyphen, especially if the next word starts with a capital letter (e.g., anti-American) or to avoid having two vowels together (e.g., anti-inflammatory). As an adjective, it is usually followed by the preposition "to" when specifying what someone is opposed to, such as saying "I am anti-corruption." In casual conversation, people often use it as a shorthand way to describe someone who disagrees with a popular opinion or movement.