Clues for the word "OPIOID"

We've had 6 crossword clues used for this word, and seen it 4 times in crosswords. It was last seen in Washington Post Sunday crossword on December 17, 2017.

Referring Clues

Sedative substance
Narcotic
Endorphin, for instance
Drug linked to a mid-2010s epidemic
Sedating substance
OxyContin, e.g.

Last Seen In

Washington Post Sunday - December 17, 2017
Netword - April 09, 2016
King Syndicate - Premier Sunday - August 25, 2013
King Syndicate - Premier Sunday - June 24, 2007