• WordNet 3.6
    • adj insane afflicted with or characteristic of mental derangement "was declared insane","insane laughter"
    • adj insane very foolish "harebrained ideas","took insane risks behind the wheel","a completely mad scheme to build a bridge between two mountains"
    • ***
Webster's Revised Unabridged Dictionary
    • Insane Causing insanity or madness. "Or have we eaten on the insane root
      That takes the reason prisoner ?"
    • Insane Characterized by insanity or the utmost folly; chimerical; unpractical; as, an insane plan, attempt, etc. "I know not which was the insane measure."
    • Insane Exhibiting unsoundness or disorder of mind; not sane; mad; deranged in mind; delirious; distracted. See Insanity, 2.
    • Insane Used by, or appropriated to, insane persons; as, an insane hospital.
    • ***
Century Dictionary and Cyclopedia
    • insane Not sane; unsound or deranged in mind; crazy.
    • insane Characteristic of a person mentally deranged; hence, wild; insensate; senseless.
    • insane Devoted to the use or care of the insane: as, an insane asylum.
    • insane Making insane; causing insanity.
    • insane Synonyms Crazed, lunatic, demented, maniacal.
    • ***
Chambers's Twentieth Century Dictionary
    • adj Insane in-sān′ not sane or of sound mind: crazy: mad: utterly unwise: senseless: causing insanity
    • ***


  • Hunter S. Thompson
    “I wouldn't recommend sex, drugs or insanity for everyone, but they've always worked for me.”
  • Sylvester Stallone
    Sylvester Stallone
    “I've been involved in something which was chaotic and insane. All I can say now is that I am, and intend to stay, a single man.”
  • Source Unknown
    Source Unknown
    “He who feels no compassion will become insane.”
  • Mark Twain
    “The rule is perfect: in all matters of opinion our adversaries are insane.”
  • William Dement
    William Dement
    “Dreaming permits each and everyone of us to be quietly and safely insane every night of our lives.”
  • Ambrose Bierce
    “A temporary insanity curable by marriage.”


Webster's Revised Unabridged Dictionary
L. insanus,. See In- not, and Sane


In literature:

Then the patient is almost sure to fancy himself going insane.
"Outwitting Our Nerves" by Josephine A. Jackson and Helen M. Salisbury
He became insane by reason of the pressure of his labors.
"English Literature, Considered as an Interpreter of English History" by Henry Coppee
One hundred and forty-five of these were insane, sixty-two were criminals, and one hundred and ninety-seven drunkards.
"Disease and Its Causes" by William Thomas Councilman
Public, relative to the Asylum for the Insane at Bloomingdale, New York, May 10th, 1821.
"A Psychiatric Milestone" by Various
On this account a temporary insanity is a favourable sign in fevers, as I have had some opportunities of observing.
"Zoonomia, Vol. I" by Erasmus Darwin
The act appropriating for the benefit of the Territorial insane asylum passed by the legislature was also vetoed.
"A Compilation of the Messages and Papers of the Presidents" by Grover Cleveland
Doctor Oleander tells me you're insane; you tell me yourself you're not insane.
"The Unseen Bridgegroom" by May Agnes Fleming
Is it possible that this insane scoundrel will come to light in spite of me?
"The Black Baronet; or, The Chronicles Of Ballytrain The Works of William Carleton, Volume One" by William Carleton
She was indeed on the very brink of raving insanity.
"The Lost Lady of Lone" by E.D.E.N. Southworth
She might be insane!
"Dorothy Dale's Camping Days" by Margaret Penrose

In poetry:

Worship w/words, w/
sounds, hands, all
joyful playful &
obscene-in the insane
"Wilderness" by James Douglas Morrison
. . . . In a moan of wind they vanish,
Dead and living; I alone
Hear old Time insanely mumble
In the sea's low monotone!
"The Old Piano" by Roden Berkeley Wriothesley Noel
It was a pity about Dickens’
Insane jealousy of chickens,
And one could really almost weep
At his morbid mistrust of sheep.
"Clerihew – Dickens" by Edmund Clerihew Bentley
Dear friend, forgive a wild lament
Insanely following thy flight
I would not cumber thine ascent
Nor drag thee back into the night;
"To J. D. H." by Sidney Lanier
But I their vain insanity survey,
And on my silent brow I let them beat.
What is there it is worth my while to say
To storm or sleet?
""What ails you, Ocean, that nor near nor far"" by Alfred Austin
When a beaten man's discovered with a bullet in his brain,
They POST-MORTEM him, and try him, and they say he was insane;
But it very often happens that he'd lately got the sack,
And his onward move was owing to the shame of going back.
"The Shame of Going Back" by Henry Lawson

In news:

In human affairs, alas, insanity is doing the same thing and expecting the same result.
His other outfit — a skull mask frozen in mid-scream and a black robe — hangs behind the front desk of Insane Broadcasting.
As you can see, the island's bars and restaurants are offering an insane number of drink and food specials.
Violent J and Shaggy 2 Dope are the Insane Clown Posse.
The figures seem curiously insane.
T hough he is little known in the West, Coptic priest Zakaria Botros — named Islam's "Public Enemy #1" by the Arabic newspaper, al-Insan al-Jadid — has been making waves in the Islamic world.
INTERVIEWS An Insanely Obsessive Infographic Tries ( in Vain ) to Diagram the Hip-Hop Galaxy.
And it is exactly as batshit over-the-top insane as we hoped.
Here, from, is a list of insane sequels that almost happened.
This dude is effing insane.
We all know that gas prices are insanely high right now and the prices are still on the rise.
Having exploded into the spotlight earlier this year, Alabama Shakes have had an insane rise to the top with their debut album Boys & Girls.
487 Mich 289 (2010), which held that the minority/insanity tolling provision, MCL 600.5851(1), also tolled the one-year-back rule, MCL 500.3145(1).
Near the beginning of "Macbeth," a character observes, "Have we eaten on the insane root that takes the reason prisoner.
Insane Creature Swallows iPods To Protect Them From Viscous Children.

In science:

Ordered by the sixth Fatimid caliph, al-Hakim, to carry out this operation, he quickly perceived the insanity of what he was attempting to do, and retired in disgrace.
Astrometry during the past 2000 years
The priority contest of the insane has lasted over 50 years.
Physics Education Research: Or it's so hard to find good help these days