Definition

Noun: A sedative drug is a substance that reduces nervous excitement, agitation, or anxiety, producing a calming or tranquilizing effect on a person. It depresses the central nervous system to induce relaxation and, in higher doses, can promote sleep.

Usage

Sedative drugs are primarily used in medical contexts to alleviate anxiety, induce sleep, or calm a patient before a medical procedure. * The doctor prescribed a sedative drug to help the patient manage severe preoperative anxiety. * Some sedative drugs can be habit-forming if used improperly or for extended periods.

Advanced Usage

• In a clinical/medical context: The term is often used to describe a class of pharmaceuticals with specific therapeutic purposes.
  • Benzodiazepines are a common class of sedative drug used for short-term treatment of anxiety disorders.
• Contrast with other depressants: While all sedatives are central nervous system depressants, the term "sedative drug" specifically highlights the calming and anxiety-reducing effect, as opposed to purely inducing sleep (hypnotics) or causing general anesthesia.

Variants and Related Words

• Sedative (n/adj): The more common short form. As a noun: "The nurse administered a sedative." As an adjective: "The medication has a sedative effect."
• Tranquilizer (n, chiefly US), Tranquilliser (n, chiefly UK): A near-synonym, often used interchangeably with "sedative drug," though sometimes associated with antipsychotic medications in broader classifications.
• Depressant (n): A broader category of drugs that slow down central nervous system activity, which includes sedatives, hypnotics, and anesthetics.
• Anxiolytic (n/adj): A drug specifically designed to reduce anxiety; a type of sedative drug.

Synonyms

• Calmative
• Tranquillizer
• Anxiolytic (specifically for anxiety reduction)
• Downer (informal/slang)

Antonyms

• Stimulant
• Analeptic
• Upper (informal/slang)

Related Phrases/Idioms

• Sedative-hypnotic: A term for drugs that have both calming (sedative) and sleep-inducing (hypnotic) properties depending on the dose.
  • Barbiturates are potent sedative-hypnotic drugs.
• To be under sedation: A phrase describing the state induced by a sedative drug.
  • The patient was under sedation during the minor surgical procedure.

Noun

1. a drug that reduces excitability and calms a person