depressant

/di'presənt/
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depressant

A doctor explains that alcohol is a depressant to a patient.

Definition

  1. Adjective:

    • Capable of depressing physiological or psychological activity: Describes a substance or agent that reduces functional activity, slows down nervous system processes, or diminishes responsiveness.

  2. Noun:

    • A drug that reduces excitability and calms a person: A substance, such as a sedative or tranquilizer, that depresses the central nervous system, leading to relaxation, drowsiness, or decreased anxiety.
Examples of Usage

  • Adjective:

    • Alcohol has a depressant effect on the central nervous system.
    • The doctor warned about the depressant properties of the medication.

  • Noun:

    • Barbiturates are powerful depressants.
    • The patient was prescribed a mild depressant to help with anxiety.
Advanced Usage
  • Technical/Medical Context: In pharmacology, a "depressant" is formally classified as a psychoactive drug that lowers neurotransmission levels, depressing or reducing arousal or stimulation in various areas of the brain.
    • Opioids act as both pain relievers and potent nervous system depressants.
Variants and Related Words
  • Depress (verb): To make someone feel very unhappy; to reduce the level of functional activity.
  • Depression (noun): A state of low mood and aversion to activity; in medicine, a reduction in functional activity.
  • Sedative (noun/adjective): A close synonym, specifically a drug that promotes calm or sleep.
Synonyms
  • Sedative: A drug that calms or induces sleep.
  • Tranquilizer: A drug used to reduce anxiety or tension.
  • Downer (informal): A slang term for a depressant drug.
Antonyms
  • Stimulant: A substance that raises levels of physiological or nervous activity in the body.
  • Antidepressant: A drug used to alleviate depression, typically having a stimulating effect on mood.
Related Phrases/Idioms
  • Central nervous system depressant: The most common specific phrase, referring to drugs that slow brain function.
    • Combining alcohol, a central nervous system depressant, with sleep aids can be dangerous.
depressant

A doctor explains that alcohol is a depressant to a patient.

Adjective
  1. capable of depressing physiological or psychological activity or response by a chemical agent
Noun
  1. a drug that reduces excitability and calms a person

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