madman

IPA/ˈmædmən/
KK[mˈædmˌæn]IPA/ˈmædmən/

madman — noun

  • madmansingular
  • madmenplural

1. a man whose actions are so unusual, wild, or violent that they seem to come from

1.nounB2
Definition

a man whose actions are so unusual, wild, or violent that they seem to come from a loss of reason, often putting other people or himself at risk

Example

The neighbours described the suspect as a madman who shouted at passers-by from his window.

Christopher drove through the market like a madman, knocking over fruit stalls and wooden carts.

like a madman — pattern for intensifying descriptions of reckless action

Common collocations
  • like a madman
  • call someone a madman
  • brand someone a madman
  • scream like a madman
  • drive like a madman
Synonyms
  • maniac

    suggests frenzied, agitated energy and often violent behaviour; slightly more informal than madman

  • lunatic

    now sounds dated and is mostly used for informal exaggeration; derived from old beliefs about the moon causing madness

  • psychopath

    a specific clinical term for a personality disorder involving lack of empathy; should not be used casually for reckless behaviour

Antonyms
  • sane person

    someone who acts with reason and self-control

Grammar Patterns

like a madman

call someone a madman

brand someone a madman

Usage Note

Frequently used in comparisons ('like a madman') to intensify descriptions of behaviour that is extremely reckless, fast, or violent.

Common Mistakes

That driver is a madman because he changed lanes without signalling.
That driver is a madman
he drove the wrong way down the motorway at full speed.' — Madman implies extreme loss of reason or danger, not just a minor traffic mistake.
My boss is a madman for giving us Friday off.
My boss is a madman for making us work through the weekend with no notice.
The term calls for genuinely unreasonable or dangerous behaviour, not a pleasant surprise.

2. a now-offensive label that doctors once used for a person with a serious mental

2.nounC1
Definition

a now-offensive label that doctors once used for a person with a serious mental health condition — this clinical usage is no longer accepted and is considered hurtful today

Example

In hospital records, Selim's great-grandfather was diagnosed as a madman and sent to an asylum.

Dr. Okafor warned his students that doctors never write madman in a clinical file.

historical medical register — no longer used in modern clinical language

Common collocations
  • be labelled a madman (historical)
  • diagnosed as a madman (dated)
  • described as a madman (historical)
  • call someone a madman (offensive)
Synonyms
  • lunatic

    carries the same historical weight and offensiveness; also derived from discredited medical theories

  • insane person

    archaic clinical phrasing, now considered vague and often inappropriate in formal contexts

  • mental patient

    outdated and potentially reductive; modern usage prefers person-first language

Grammar Patterns

describe someone as a madman (historical)

be labelled a madman (dated)

Usage Note

Considered highly offensive when used to describe someone with a mental health condition. Modern alternatives include 'person with a mental illness', 'person living with schizophrenia', or specific clinical terms. The word remains in use in historical discussions and in some literary contexts, but using it as a descriptor for a living person is stigmatising.

Common Mistakes

My cousin has bipolar disorder; he is a madman.
My cousin has bipolar disorder; he lives with a mental health condition.
Using madman for someone with a diagnosed mental illness is both inaccurate and offensive.
That character in the movie is a madman — the director did a great job.
That character in the movie is a madman
the actor played the role as someone losing his grip on reality.' — Even in media reviews, describing a mentally ill character as a madman can reinforce harmful stereotypes.

Word family

Synonym discussion

Sense: noun/1

Madman, maniac, lunatic, and psychopath all describe someone whose behaviour is dangerously outside normal limits, but each carries a different shade of meaning. Madman is the broadest term — it covers anyone acting so wildly or violently that they appear to have lost reason, whether temporarily or permanently. Maniac adds a sense of frenzied, uncontrolled energy: a maniac acts at top speed, often causing destruction along the way. Lunatic, which comes from the ancient belief that madness was linked to the moon, now sounds dated and is mostly used in informal exaggeration ('only a lunatic would try that route'). Psychopath is a clinical label for a specific personality disorder involving a lack of empathy — it should not be used as a loose synonym for violent or reckless behaviour. In everyday language, madman and maniac are the most natural choices for strong but non-clinical descriptions.

madman ↗maniac ↗lunatic ↗psychopath

Common collocations

Phrases

  • behave like a madman
  • call someone a madman
  • brand someone a madman
  • dismiss someone as a madman
  • scream like a madman

Prepositions

  • like a madman

Etymology

Old EnglishMiddle EnglishEnglish

Madman comes from Old English 'gemǣdd' (meaning insane or out of one's mind) combined with 'mann' (person, human being). The word has been in continuous use since at least the early 14th century, originally functioning as a plain descriptive label for someone with a serious mental disturbance. Over the following centuries, its meaning widened to include anyone behaving so recklessly or irrationally that they seemed to have lost reason — regardless of whether an actual mental illness was involved. Meanwhile, as medical understanding advanced, the clinical use of madman became stigmatised and was gradually dropped from professional language. Today, the term survives mainly in two very different contexts: as a strong informal criticism of dangerous behaviour, and — controversially — as a historical relic whose original medical meaning is now considered offensive.