Impregnable \Im*preg"na*ble\, a. [F. imprenable; pref. im- not +
prenable pregnable, fr. prendre to take, L. prehendere. See
Comprehend, Get to obtain.]
Not to be stormed, or taken by assault; incapable of being
subdued; able to resist attack; unconquerable; as, an
impregnable fortress; impregnable virtue.
[1913 Webster]
The man's affection remains wholly unconcerned and
impregnable. --South.
--
The Collaborative International Dictionary of English v.0.48
Impregnable \Im*preg"na*ble\, a. [See Impregnate.] (Biol.)
Capable of being impregnated, as the egg of an animal, or the
ovule of a plant.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48
impregnable
adj 1: able to withstand attack; "an impregnable fortress";
"fortifications that made the frontier inviolable"
[syn: inviolable, secure, strong, unassailable,
unattackable]
2: impossible to take by storm [syn: inexpugnable]
WordNet (r) 2.0
42 Moby Thesaurus words for "impregnable":
deathless, defended, guarded, immortal, impenetrable, imperishable,
incontestable, incorruptible, indelible, indestructible,
indomitable, ineffaceable, ineradicable, inexpugnable,
inextinguishable, insuperable, invincible, inviolable,
invulnerable, irresistible, mighty, nonperishable, overpowering,
overwhelming, protected, quenchless, resistless, safe, safeguarded,
secure, shielded, unassailable, unbeatable, unconquerable,
undampable, undefeatable, undestroyable, undying, unquenchable,
unsubduable, unsurmountable, unyielding
Moby Thesaurus II by Grady Ward, 1.0
inexpugnable, inviolable, secure, strong, unassailable, unattackable
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