opiated

noun

1. any drug containing opium or any of its derivatives, and acting as a sedative and narcotic
2. anything tending to quiet, soothe, or deaden

Origin: ML opiatum: see opium

adjective

1. containing opium
2. bringing sleep, quiet, or ease; narcotic

transitive verb opiated, opiating

1. Rare to treat with an opiate
2. to dull; deaden