noun

1. A drug that causes an addiction.

2. Anything that is very habit-forming.

adjective

1. Causing or tending to cause addiction; habit-forming.

   “These are addictive drugs.”

2. Enjoyable.

   “Have you seen that new TV show? It's so addictive.”

3. Characterized by or susceptible to addiction.

   “He has an addictive personality.”

Synonyms: habit-forming