Answer: opioid

AnswerCrossword Clue
OPIOIDSedative substance
OPIOIDNarcotic
opioida peptide that acts like opium
opioidany of a group of natural substances, as the endorphins, produced by the body in increased amounts in response to stress and pain
opioidpossessing some properties characteristic of opiate narcotics but not derived from opium
opioidpertaining to such a substance
opioidany opiumlike substance
opioidany of several synthetic compounds, as methadone, having effects similar to natural opium alkaloids and their derivatives