madness

noun

mad·​ness ˈmad-nəs 

1

: the quality or state of being mad: such as

a

: a state of severe mental illness

—not used technically

… fortifications against an inner darkness, the threat of madness that crouched above him throughout his life.

—Robert F. Moss

b

: behavior or thinking that is very foolish or dangerous : extreme folly

an idea that is pure/sheer madness

c

: ecstasy, enthusiasm

d

: intense anger : rage

2

: any of several ailments of animals marked by frenzied behavior

specifically : rabies

Synonyms

• insanity
• dementia
• hysteria
• schizophrenia

Examples of madness in a Sentence

He suffered a series of tragedies that nearly drove him to madness.

Her friends told her the idea was pure madness, but she went through with it anyway.

It was the height of madness for him to drive at such high speeds!

Recent Examples on the Web

Mid-season madness has officially started for the Colorado Rapids, less than a week before the MLS secondary transfer window opens. —Braidon Nourse, Denver Post, 19 July 2025

Will the young girl in Horas Extras succumb to total madness? —John Hopewell, Variety, 17 July 2025

What follows is a floor-by-floor descent into madness as Bobby battles bloodthirsty perverts, demonic flash mobs, and hallucinogenic suburban nightmares, all while trying to figure out if he’s meant to be the hero… or just the last guy standing. —Andreas Wiseman, Deadline, 14 July 2025

The answer is the annual CASH & ROCKET road rally, a mixture of pure madness, mayhem, undeniable fun, food and so much fashion. —Gillian Telling, People.com, 8 July 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1

Phrases Containing madness

• (a) method in/to one's madness

Rhymes for madness

• badness
• gladness
• sadness

Medical Definition

madness

noun

mad·​ness ˈmad-nəs 

1

: a severely disordered state of mind

—not used technically

2

: any of several ailments of animals marked by frenzied behavior

specifically : rabies