noun (n)

• a drug used to reduce stress or tension without reducing mental clarity

  obat yang digunakan untuk kurangkan stres atau tanpa mengurangi ketegangan mental kejelasan

  Synonym:
  antianxiety agent, ataractic, ataractic agent, ataractic drug, tranquilliser, tranquillizer
  

  source: wordnet30
• One who, or that which, tranquilizes.

  satu yang, atau itu yang, tranquilizes.

  source: webster1913