Definition of opiate in English:



  • Relating to, resembling, or containing opium.

    ‘the use of opiate drugs’
    • ‘The project, the first of its kind in the York area, aims to help addicts of heroin and other opiate drugs such as methadone.’
    • ‘Heroin is a powerful opiate analgesic derived from morphine.’
    • ‘As the name might suggest, cells with opiate receptors respond to opium and its derivatives, morphine and heroin.’
    • ‘The addition of opiate drugs in epidurals can create further risks for the mother, such as respiratory depression.’
    • ‘Anti-cancer drugs and radiotherapy commonly produce nausea and vomiting, as do other drugs active in the central nervous system, including opiate pain killers (morphine, heroin) and also alcohol.’
    • ‘By using opiate analgesics and sedatives to provide comfort to a dying patient, we risk depressing respirations and causing hypotension, which may hasten death.’
    • ‘Small studies have suggested that the opiate antagonist naltrexone is effective for treating alcohol addiction.’
    • ‘He claimed that the practice of giving fishermen a strong opiate drug for withdrawal was just as dangerous as heroin as there was no way of monitoring its use at sea.’
    • ‘Although patients with pain may request opiate analgesics, it is best to emphasize the benign treatments mentioned previously.’
    • ‘Both were white women with a college education, and both used prescription opiate drugs along with heroin.’


  • 1A drug derived from or related to opium.

    ‘the opiates are known to have natural counterparts called endorphins’
    • ‘Spanish pharmacies had become paradises for dope fiends, and heroin users often maintained themselves with opiates and tranquilizers obtained in these facilities.’
    • ‘A urine drug screen for cocaine, opiates, and methamphetamine was conducted on each potential participant.’
    • ‘Methadone is a synthetic opiate, similar to heroin, that blocks the effects of heroin and eliminates withdrawal symptoms.’
    • ‘There is no difference between men and women on lifetime prevalence of cannabis, cocaine, amphetamines, opiates, or sedatives.’
    • ‘Drugs such as opiates and cocaine are clearly very enjoyable, and users often report that such drugs produce intense feelings of pleasure.’
    • ‘The agents treat opiate addiction by preventing symptoms of withdrawal from heroin and other opiates.’
    • ‘The 10-minute test can detect cannabis up to 14 days after it is taken, but only three to five days after cocaine, amphetamines or opiates are used.’
    • ‘This is a shortcoming that is probably unavoidable and applies to all double blind studies comparing opiates with other drugs.’
    • ‘Any painkillers containing opiates, such as laudanum, were out of the question until the concussion went away.’
    • ‘No errors were found for current dependency on amphetamine, opiates, PCP, hallucinogens, and inhalants.’
    • ‘A legal opiate analog such as methadone may be substituted for the abused opiate, with the methadone dosage then slowly reduced.’
    • ‘Whether it be alcohol, cannabis, opiates, Khat, cocaine, nicotine or merely caffeine, few of us seem able to face life without chemical crutches.’
    • ‘The results of a urine toxicology screen were positive for opiates and cocaine.’
    • ‘Drugs counsellors generally agree that residential treatment is the only means by which most addicts will permanently quit opiates - heroin, cocaine and methadone.’
    • ‘On the other hand, the state increased its regulation of legally manufactured drugs such as amphetamine, opiates, opioids, and, to a lesser extent, barbiturates and tranquilizers.’
    • ‘Lifestyle factors such as smoking, drug use (especially cocaine or opiates like heroin) and excessive alcohol consumption can affect sexual function.’
    • ‘Powdered morphine, which is an opiate, sprinkled directly on the wound and oral opium also were used widely as analgesics.’
    • ‘A survey of general practitioners in Leicestershire has shown they are seriously dissatisfied with the systems in place for handling controlled drugs such as opiates.’
    • ‘In this case, the drug was an opiate called Percocet, a prescription pain medication.’
    • ‘The specimens are tested for marijuana, cocaine, opiates, amphetamines, PCP, and five other drugs.’
    drug, narcotic, mind-altering drug, sedative, tranquillizer, depressant, sleeping pill, soporific, anaesthetic, painkiller, analgesic, anodyne
    barbiturate, bromide, morphine, opium, laudanum
    calmative, palliative, stupefacient
    dope, downer
    sleeping draught
    View synonyms
    1. 1.1A thing which soothes or stupefies.
      ‘the capacity to use books as an opiate’


  • 1 Impregnate with opium.

    ‘they smoked the last of his opiated dope’
    1. 1.1Dull the senses of (someone) with or as if with opium.
      ‘she is not opiated with resignation’
      • ‘There are other ways to watch than simply joining the opiated masses.’
      • ‘See if it changes your paltry lives in the slightest to send him packing back to his richly opiated Irish mistress!’
      • ‘They want us to feel impotent, to worship the golden calf of commercialism, dazzled and opiated by its pale buzzing glow.’


Late Middle English (as a noun): from medieval Latin opiatus (adjective), opiatus (noun), based on Latin opium (see opium).