Adjective
antiregime (comparative more antiregime, superlative most antiregime)
(politics) Opposing a regime.
A group of children had been arrested and tortured by the authorities for writing antiregime graffiti; incensed local people took to the street to demonstrate for political and economic reforms. Source: Internet
ISIS, the most hardline among an array of antiregime foreign extremist groups operating in northern Syria, recently took control of the area surrounding the tomb and threatened to seize and destroy it. Source: Internet