Definition of "opponent" in English

noun

1. One who opposes another; one who works or takes a position against someone or something; one who attempts to stop the progress of someone or something.

   • The person who ran against her in the last election proved to be a formidable opponent.
   • During the crackdown, many opponents of the regime were arrested.

adjective

1. (obsolete) Opposing; adverse; antagonistic.

2. (obsolete) Situated in front; opposite.