The phrase "deadly addiction" refers to a strong and harmful dependency on something that can ultimately lead to severe and possibly fatal consequences. Full definition
Convening his task force on the heroin epidemic, Cuomo told Staten Islanders that he expects to get laws passed this session to address the deadly addiction that many New Yorkers have become all too familiar with. (nystateofpolitics.com)
Large, brightly lit shop displays of tobacco act like big adverts for cigarette brands and, placed next to the sweets and crisps in shops, make smoking seem like an invitingly normal, everyday activity rather than a deadly addiction. (politics.co.uk)
«The harsh reality is that half of all long term smokers will die from this deadly addiction,» she said. (politics.co.uk)