Definitions:

1. a drug that produces numbness or stupor noun
   • There was a pile of narcotics on the table.
2. inducing mental lethargy adjective
   • The candidate gave a narcotic speech.
3. inducing stupor or narcosis adjective
   • Narcotic drugs are used by many members of society.
4. of, relating to, or designating narcotics adjective
   • The narcotic addicts were arrested by the police.

Synonyms:

• narcotising
• narcotizing
• soporiferous
• soporific