opponent

nounmasculine/ɔpuˈzitɔɾ/high

o·po·si·tor

Definition

One who opposes, especially in politics; an adversary.

The incumbent's main opponent is gaining in the polls.

Opponents of the law filed a lawsuit.

syn

ant

Common collocations

political opponentmain opponentstaunch opponent

Do latim 'oppositor, -oris', de 'opponere' (opor).