The crossword solutions for the term ADDICTIVE are NICOTINE (8 letters), OPIUM (5 letters), enabler (7 letters), HEROIN (6 letters), and OPIATE (6 letters). NICOTINE is a stimulant found in cigarettes, cigars, and other tobacco products. OPIUM is a narcotic drug derived from the poppy plant. An enabler is someone who encourages or enables another person's addiction. HEROIN is an illegal opioid drug that is highly addictive. Opiates are drugs derived from OPIUM and include morphine and codeine. All of these substances are highly addictive and can lead to physical and psychological dependence.