addictive
/əˈdɪktɪv/adjective
1- (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。
1.1
- 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。