An opponent or enemy.
A muscle that acts in opposition to another.
A chemical that binds to a receptor but does not produce a physiological response, blocking the action of agonist chemicals.
The main character or force opposing the protagonist in a literary work or drama.
One who antagonizes or stirs.
A group captain.
A group photo including the photographer; a group self-portrait.
A fan, especially a young female fan of a male singer or rock group; a person who seeks intimacy (most often physical, sometimes emotional) with a celebrity, usually a rock 'n' roll artist or band member.