上瘾

上癮
shàngyǐn
  1. to get into a habit
  2. to become addicted

CEDICT

Entry Composition

1 上 shàng
  1. (bound form) up; upper; above; previous
  2. first (of multiple parts)
  3. to climb; to get onto; to go up
  4. to attend (class or university)
  5. (directional complement) up
  6. (noun suffix) on; above
2 瘾 yǐn
  1. addiction
  2. craving