countercampaign

noun

coun·​ter·​cam·​paign ˌkau̇n-tər-(ˌ)kam-ˈpān 

variants or counter-campaign

plural countercampaigns or counter-campaigns

: a campaign waged in opposition to another campaign

Conservatives slammed the law, claiming it discriminates against men and waged a counter-campaign.

—Anna Momigliano

Word History

First Known Use

1881, in the meaning defined above