anti
n. B1 Intermediate US //ˈænˌtaɪ// UK //ˈænti// an·ti
n. against or opposed to something. You use this to show you do not like or support a specific idea, person, or group.
n. opposed to or against a particular person, group, or ideology. Often functions as a prefix, but also appears as a standalone preposition in informal contexts to indicate opposition.
I am not anti-progress, but I want to protect our history.
The local community is strongly anti the new highway proposal because of the noise it will bring.
While the candidate claimed to be anti-establishment, her voting record suggested a deep alignment with traditional party interests and corporate lobbyists.
Usage
Commonly used as a prefix (anti-war, anti-social); when used as a standalone preposition, it is informal and takes a noun phrase object.