noun
addict; junkie; substance abuser
Refers to a person addicted to drugs, alcohol, or other substances. Can be used in medical, legal, or everyday contexts.
彼は薬物中毒者として治療を受けている。
He is receiving treatment as a drug addict.
中毒者の更生プログラムが重要だ。
Rehabilitation programs for addicts are important.
中毒 means 'poisoning' or 'addiction' in a broader sense, whereas 中毒者 specifically denotes the addicted person.
Compound of 中毒 (chūdoku, 'addiction, poisoning') and 者 (sha, 'person').