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impregnable

See definition of impregnable on Dictionary.com

synonyms for impregnable

  • fortified
  • impenetrable
  • indestructible
  • invincible
  • invulnerable
  • unassailable
  • firm
  • secure
  • solid
  • strong
See also synonyms for: impregnability

antonyms for impregnable

MOST RELEVANT
  • breakable
  • destructible
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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How to use impregnable in a sentence

The Prussians held an apparently impregnable position on the Landgrafenberg, a precipitous hill which commanded the town.
NAPOLEON'S MARSHALSR. P. DUNN-PATTISON
These are truths—fixed facts, that quaint theory and exhausted moralising, are impregnable to, and fall harmlessly before.
THE CONDITION, ELEVATION, EMIGRATION, AND DESTINY OF THE COLORED PEOPLE OF THE UNITED STATESMARTIN R. DELANY
This done, the fort was declared impregnable, and the tired travellers turned in, well assured of complete security.
GOLD-SEEKING ON THE DALTON TRAILARTHUR R. THOMPSON
At the beginning of this year Antwerp, supposed to have been impregnable, surrendered to Marshal Gerard.
THE HISTORY OF ENGLAND IN THREE VOLUMES, VOL.III.E. FARR AND E. H. NOLAN
Here, at least, was a citadel impregnable by right-hand defections or left-hand extremes.
TALES AND FANTASIESROBERT LOUIS STEVENSON
It broke up the Tweed Ring, seemingly impregnable, in a single campaign.
LIPPINCOTT'S MAGAZINE OF POPULAR LITERATURE AND SCIENCEVARIOUS
It was generally believed in Hooker's army that Lee, finding the position too impregnable, was retiring.
THE BOYS OF '61CHARLES CARLETON COFFIN.
Often they are planted in almost impregnable sites, like the little church of Shwawutha in our illustration.
THE CRADLE OF MANKINDW.A. WIGRAM
Against this impregnable place, Burnside launched charge after charge, and never did men go more bravely and certainly to death.
HISTORIC FREDERICKSBURGJOHN T. GOOLRICK
A battle fleet was mobilized and rushed to the spot, but the city was impregnable.
ISLANDS OF SPACEJOHN W CAMPBELL
SYNONYM OF THE DAY
OCTOBER 26, 1985
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WORDS RELATED TO IMPREGNABLE

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.