Addicted

devoted or given up to a practice or habit or to something psychologically or physically habit-forming (usually followed by to):
to be addicted to drugs.
a person who is to an activity, habit, or substance:
a drug addict.
to cause to become physiologically or psychologically dependent on an substance, as alcohol or a narcotic.
to habituate or abandon (oneself) to something compulsively or obsessively:
a writer addicted to the use of high-flown language; children addicted to video games.
Contemporary Examples

What I am addicted to is affirmation and validation from women.
Porn Professor Hugo Schwyzer Comes Clean About His Twitter Meltdown and Life as a Fraud Richard Abowitz August 11, 2013

Your addiction years must help with your portrayal of Nurse Jackie, who is addicted to painkillers.
Edie Falco Comes Clean Kevin Sessums May 15, 2010

The premise: an intervention for a man who is addicted to, well, slapping ass.
Are Key and Peele Biracial Geniuses or Are They Just Really Funny? Sujay Kumar December 1, 2013

He dealt drugs, was addicted to cocaine by the time he was 13, and found himself constantly in trouble with the law.
Mark Wahlberg’s Pardon Plea: A Look Back At His Troubling, Violent, and Racist Rap Sheet Marlow Stern December 6, 2014

Many were addicted to heroin, some were police informants, and several left small children behind.
Who’s Murdering the Prostitutes of Albuquerque? Sally Denton April 26, 2009

Historical Examples

Here is just the opportunity for any one addicted to petty larceny.
Vistas of New York Brander Matthews

They do not wear gloves, nor are they addicted to scent on their pocket-handkerchiefs.
Camps, Quarters and Casual Places Archibald Forbes

The men are addicted to the same practice, but with rather more discretion.
Indo-China and Its Primitive People Henry Baudesson

In politics one afflicted with self-respect and addicted to the vice of independence.
The Devil’s Dictionary Ambrose Bierce

The Italians never had much love for theological studies, and those who were addicted to them preferred Paris to Italy.
Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 8 Various

verb (əˈdɪkt)
(transitive; usually passive) often foll by to. to cause (someone or oneself) to become dependent (on something, esp a narcotic drug)
noun (ˈædɪkt)
a person who is addicted, esp to narcotic drugs
(informal) a person who is devoted to something: a jazz addict
adj.

1530s, “delivered over” by judicial sentence; past participle adjective from addict (v.). Modern sense of “dependent” is short for self-addicted “to give over or award (oneself) to someone or some practice” (1560s; exact phrase from c.1600); specialization to narcotics dependency is from c.1910.
v.

1530s (implied in addicted), from Latin addictus, past participle of addicere “to deliver, award, yield; give assent, make over, sell,” figuratively “to devote, consecrate; sacrifice, sell out, betray” from ad- “to” (see ad-) + dicere “say, declare” (see diction), but also “adjudge, allot.” Earlier in English as an adjective, “delivered, devoted” (1520s). Related: Addicted; addicting.
n.

1909, in reference to morphine, from addict (v.).

addict ad·dict (ə-dĭkt’)
v. ad·dict·ed, ad·dict·ing, ad·dicts
To become or cause to become compulsively and physiologically dependent on a habit-forming substance. n. (ād’ĭkt)
One who is addicted, as to narcotics.
ad·dic’tive adj.