narcotic

 
Pronunciation: /nɑːˈkɒtɪk/

noun

  • an addictive drug affecting mood or behaviour, especially an illegal one: cultivation of a plant used to make a popular local narcotic
  • Medicine a drug which induces drowsiness, stupor, or insensibility, and relieves pain: pethidine, usually given as an injection, is a narcotic which causes drowsiness

adjective

  • relating to or denoting narcotics or their effects or use: the substance has a mild narcotic effect

Derivatives

narcotically

adverb

narcotism

Pronunciation: /ˈnɑːkətɪz(ə)m/
noun

Origin:

late Middle English: from Old French narcotique, via medieval Latin from Greek narkōtikos, from narkoun 'make numb'