Try Our Apps
Dictionary.com

follow Dictionary.com

What is the origin of "February"?

impregnable1

[im-preg-nuh-buh l] /ɪmˈprɛg nə bəl/
adjective
1.
strong enough to resist or withstand attack; not to be taken by force, unconquerable:
an impregnable fort.
2.
not to be overcome or overthrown:
an impregnable argument.
Origin of impregnable1
late Middle English
1400-1450
1400-50; late Middle English impregnable, imprenable < Middle French, equivalent to im- im-2 + prenable pregnable
Related forms
impregnability, impregnableness, noun
impregnably, adverb
Synonyms
1. invulnerable. 1, 2. See invincible. 2. unassailable.
Antonyms
1. vulnerable.

impregnable2

[im-preg-nuh-buh l] /ɪmˈprɛg nə bəl/
adjective
1.
susceptible to impregnation, as an egg.
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
Cite This Source
Examples from the Web for impregnable
Contemporary Examples
Historical Examples
  • It is easy, therefore, to understand why the early Jebusites regarded their city as impregnable.

    Biblical Geography and History Charles Foster Kent
  • Some impregnable barrier of personality separated them as if it were a wall.

    Virginia Ellen Glasgow
  • Resistance was cut short and Al-Qamus, the impregnable, was captured by the warriors of Islam.

    The Life of Mohammad Etienne Dinet
  • Poor Janetta's heart was very tender, although her resolution was impregnable.

    A True Friend Adeline Sergeant
  • His position was impregnable to the dogs, but, thus perched, he was a splendid mark for E-tuk-i-shook.

    My Attainment of the Pole Frederick A. Cook
  • It has not yet been placed on that basis which would make them impregnable.

British Dictionary definitions for impregnable

impregnable1

/ɪmˈprɛɡnəbəl/
adjective
1.
unable to be broken into or taken by force: an impregnable castle
2.
unable to be shaken or overcome: impregnable self-confidence
3.
incapable of being refuted: an impregnable argument
Derived Forms
impregnability, impregnableness, noun
impregnably, adverb
Word Origin
C15 imprenable, from Old French, from im- (not) + prenable able to be taken, from prendre to take

impregnable2

/ɪmˈprɛɡnəbəl/
adjective
1.
able to be impregnated; fertile
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 impregnable
adj.

early 15c., imprenable "impossible to capture," from Middle French imprenable "invulnerable," from assimilated form of in- "not, opposite of" (see in- (1)) + Old French prenable "assailable, vulnerable" (see pregnable). With intrusive -g- 16c., on model of deign, reign, etc. Related: Impregnability.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for impregnable

Few English speakers likely know this word

Word Value for impregnable

0
24
Scrabble Words With Friends

Nearby words for impregnable