methadone
/ˈmɛθ.əd.əʊn/US/ˈmɛθ.əˌdoʊn/
methadone noun: a powerful synthetic analgesic drug which is similar to morphine in its effects but less sedative and is used as a substitute drug in the treatment of morphine and heroin addiction.

Noun
methadone (countable and uncountable, plural methadones)
- A powerful synthetic analgesic drug which is similar to morphine in its effects but less sedative and is used as a substitute drug in the treatment of morphine and heroin addiction.
- But methadone is a dangerous drug. If taken orally by a nonaddict, it can cause euphoria or even death.1971 March 19, Richard Severo, “Addiction: Chemistry Is the New Hope, but Degree of Its Effectiveness Is Still Disputed”, in The New York Times
- Synonyms:
- amidone
Synonyms of methadone
Forms of methadone
| plural | methadones |
|---|
Origin of methadone
From (di)meth(yl)a(mino) + d(iphenyl) + (heptan)one.
Words formed from methadone
Questions about methadone
- What does methadone mean?
- Methadone means a powerful synthetic analgesic drug which is similar to morphine in its effects but less sedative and is used as a substitute drug in the treatment of morphine and heroin addiction.
- What part of speech is methadone?
- Methadone is a noun.
- How do you pronounce methadone?
- Methadone is pronounced /ˈmɛθ.əd.əʊn/ (UK).
- What is the plural of methadone?
- The plural of methadone is methadones.
Words near methadone in the dictionary
Source and license
Adapted from Wiktionary: methadone (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-methadone.wav.
Cite this entry: “methadone.” Word.ws, https://word.ws/methadone. Based on Wiktionary, CC BY-SA 4.0.
