anti >> /ˈæn(t)i/
Definition: [preposition] Opposed to; against.
Example: I'm anti the abuse of drink and the hassle that it causes
Definition: [noun] A person opposed to a particular policy, activity, or idea.
Example: a shadow army of antis who endanger your sport
Definition: [adjective] Opposed.
Example: neither side in the debate, whether anti or pro, has offered a particularly convincing case