antagonist

• اسم يدل على شخص يعارض أو يقاوم شخصًا آخر أو شيئًا ما بشكل فعال أو عدائي؛ ويُستخدم أيضًا في التشريح للدلالة على عضلة تعمل عكس عضلة أخرى، وفي الصيدلة للدلالة على مادة تبطل مفعول دواء آخر.

A noun referring to a person who actively opposes or is hostile to someone or something; also used in anatomy for a muscle that opposes the action of another, and in pharmacology for a substance that counteracts the effects of another drug.

1. Opponent or adversaryB2formal

   A person who actively opposes or is hostile to someone or something; an adversary.

   الخصم أو العدو

   • The hero finally defeated his antagonist in the final battle.
   • She was a formidable antagonist in the political debate.
   • The novel's antagonist is a cunning and manipulative character.

   المرادفاتadversarychallengercompetitorcontenderenemyfoehostileopponentopposerrival

   الأضدادadvocateallyfriendproponentsupporter

2. Opposing muscleC1formalmedical

   A muscle that acts in opposition to the action of another muscle, relaxing while the other contracts.

   العضلة المضادة

   • The biceps and triceps are antagonist muscle pairs.
   • When you flex your arm, the antagonist muscle relaxes.
   • Physical therapy often focuses on strengthening antagonist muscles.

   المرادفاتantagonistic muscle

   الأضدادagonistprotagonistsynergist

3. Drug blockerC1formalmedical

   A substance that inhibits or counteracts the physiological action of another substance, such as a hormone or neurotransmitter.

   مضاد

   • The doctor prescribed an opioid antagonist to reverse the overdose.
   • This drug acts as a receptor antagonist, blocking the effects of histamine.
   • Antagonist drugs are used to treat various conditions by neutralizing harmful substances.

   المرادفاتblockerblocking agentinhibitor

   الأضدادagonist