verb (used with object), de·crim·i·nal·ized, de·crim·i·nal·iz·ing.
Origin of decriminalize
Examples from the Web for decriminalize
He once ran for sheriff of Pitkin County, Colorado, on the Freak Power ticket, promising to decriminalize drugs.
1963, "to reform a criminal," back-formation from decriminalization. Meaning "to make legal something that formerly had been illegal" was in use by 1970 (there are isolated instances back to 1867). Related: Decriminalized; decriminalizing.