(of a substance or activity) causing or likely to cause someone to become addicted to it (物质,活动)使人(或可能使人)上瘾的 a highly addictive drug. 特别容易让人上瘾的药物。 ■of, relating to, or susceptible to the fact of being or becoming addicted to something (与)上瘾(有关)的,易上瘾的 addictive behaviour. 上瘾的行为。