Definitions
from The Century Dictionary.
- Not pregnable; not to be taken or reduced by force: as, an impregnable fortress.
- Not to be moved, shaken, or overcome; invincible: as, impregnable virtue.
from the GNU version of the Collaborative International Dictionary of English.
- adjective Not to be stormed, or taken by assault; incapable of being subdued; able to resist attack; unconquerable
- adjective (Biol.) Capable of being impregnated, as the egg of an animal, or the ovule of a plant.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective etc., also used figuratively Too strong to be
penetrated . - adjective Capable of being
impregnated .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adjective incapable of being overcome, challenged or refuted
- adjective immune to attack; incapable of being tampered with
- adjective capable of conceiving
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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Charleston is a strongly fortified place and I think impregnable from the water side.
Letter from Wright M. Carter to Young J. and Mollie Allen,May 6, 1861 2008
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Given the regular news reports of enterprise data lost through laptop theft, third party misfeasance, WEP hacking, loss of backup tapes, disgruntled employees, etc., it’s not like enterprise data is currently held in impregnable Kryptonite fortresses.
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It was this land side, containing the citadel and other works, which so impressed outsiders with the idea of impregnable strength.
The Great Fortress : A chronicle of Louisbourg 1720-1760 William Charles Henry Wood 1905
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You will storm that great fortress which men call impregnable -- you will storm it and you will vanquish it; and you will come home crowned with glory and honour!
French and English A Story of the Struggle in America Evelyn Everett-Green 1894
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I also knew that if we could by any means defend this doorway the murderers could get in nowhere else; for the palace is absolutely impregnable, that is, since the secret door by which Sorais had entered on that memorable night of attempted murder had, by Nyleptha's order, been closed up with masonry.
Allan Quatermain Henry Rider Haggard 1890
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So he built an "impregnable" fortress atop the rock.
Archive 2006-05-01 mike247worldwide 2006
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So he built an "impregnable" fortress atop the rock.
Sigiriya mike247worldwide 2006
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And never fear: the harmless, "impregnable" Iranians will be more than happy to aid their Shia religious brethren to victory in that battle.
Archive 2005-12-01 Glenn Greenwald 2005
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And never fear: the harmless, "impregnable" Iranians will be more than happy to aid their Shia religious brethren to victory in that battle.
The joys of Iraqi democracy . . . for Iran Glenn Greenwald 2005
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Metcalfe said her department had put into place an "impregnable" security system which had been breached.
oroboros commented on the word impregnable
Contronymic in the sense: impossible to penetrate vs. penetrable, suseptible to impregnation.
January 31, 2007
gtss commented on the word impregnable
(Mumm-Ra / "THE UNHOLY ALLIANCE")
"SkyTomb is impregnable"
-Chilla,"MUMM-RA LIVES - PART III"
March 18, 2008
chained_bear commented on the word impregnable
It seems awfully weird that impregnable and impregnate mean kind of opposite things. You'd think it would better be inimpregnable.
April 2, 2008
seanahan commented on the word impregnable
I think there are two different prefixes which both look like "im". The first is "not", and the second is roughly "in".
April 2, 2008
madmouth commented on the word impregnable
better yet, the two meanings of "inflammable"--that which isn't flammable; that which can be inflamed.
May 21, 2009
oroboros commented on the word impregnable
See unbearable.
March 10, 2010