addict

US /ˈæd.ɪkt/
UK /ˈæd.ɪkt/
"addict" picture
1.

a person who is addicted to a particular substance, typically an illegal drug

:
He was a heroin addict for many years.
The program helps drug addicts recover.
2.

a person who is enthusiastically devoted to a particular thing or activity

:
He's a coffee addict, he can't start his day without it.
My brother is a gaming addict.
1.

to cause (someone) to become addicted to something

:
Some argue that social media platforms are designed to addict users.
The drug can quickly addict a person if not used carefully.