obsession, devotion, infatuation, passion
attachment
By definition any addiction to anything is bad.
tell the truth
positive
aye
None, there is only one word for killed there is no positive way it is just killed.
OPPOSITE NOUN addiction
There is no root word for Addict. This is because addict is the root word of addiction.
Its an anode
Favourable result.
An anecdote can be another word for story.
Dependence is close, as in "dependence on alcohol." Another word for addiction would be a bad habit, some addictions turn into addictions because of obsessive bad habits.