ad ‧ dic ‧ tive /əˈdɪktɪv/ BrE AmE adjective
1 . if a substance, especially a drug, is addictive, your body starts to need it regularly and you are unable to stop taking it:
Tobacco is highly addictive.
2 . an activity that is addictive is so enjoyable that you do not want to stop:
It started as a hobby, but it got so addictive I had to keep on doing it.
addictive arcade games