9 Grammatical Pitfalls


[in-seyn] /ɪnˈseɪn/
not sane; not of sound mind; mentally deranged.
of, relating to, or characteristic of a person who is mentally deranged:
insane actions; an insane asylum.
utterly senseless:
an insane plan.
Origin of insane
1550-60; < Latin insānus. See in-3, sane
Related forms
insanely, adverb
insaneness, noun
pseudoinsane, adjective
1. demented; lunatic, crazed, crazy; maniacal. 3. foolish, irrational. See mad. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for insanely
  • Their entire life, it appears to me, is one insanely committed camping trip.
  • Malpractice insurance for doctors is insanely high and grows each year.
  • The people pushing for deregulation knew it would make them insanely rich at the expense of everyone else.
  • Heath care costs have become insanely high because the industrialization of medicine has ruined the doctor-patient relationship.
  • The portrait that emerges is of a culture that's insanely obsessed with pedigree.
  • If you are even considering the idea that this is real, then you are insanely gullible.
  • The full moon is insanely bright, and can keep people awake at night if it's shining in their bedroom window.
  • If demand for a product is insanely high, then supply will eventually rise to meet it.
  • But though they are educated and accomplished, they are not crazy enough to be insanely great.
  • Now, the government must come in and make those insanely profitable investments that only a government can do.
British Dictionary definitions for insanely


  1. mentally deranged; crazy; of unsound mind
  2. (as collective noun; preceded by the): the insane
characteristic of a person of unsound mind: an insane stare
irresponsible; very foolish; stupid
Derived Forms
insanely, adverb
insaneness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for insanely



1550s, from Latin insanus "mad, insane; outrageous, excessive, extravagant," from in- "not" (see in- (1)) + sanus "well, healthy, sane" (see sane). Originally only of persons; of actions, from 1842. Cf. lunatic; and Italian pazzo "insane," originally a euphemism, from Latin patiens "suffering." German verrückt, literally past participle of verrücken "to displace," "applied to the brain as to a clock that is 'out of order' " [Buck]. The noun meaning "insane person" is attested from 1786.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
insanely in Medicine

insane in·sane (ĭn-sān')
Of, exhibiting, or afflicted with insanity.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source

Word of the Day

Difficulty index for insane

Most English speakers likely know this word

Word Value for insanely

Scrabble Words With Friends

Quotes with insanely

Nearby words for insanely