adj · 6 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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From Late Middle English imprenable, impregnable (“impossible to capture, impregnable”), from Old French imprenable (modern French imprenable (“impregnable”)), from im- (a variant of in- (prefix meaning ‘not’) + prenable (“(military) of a building, position, etc.: takable”) (from prendre (“to take”) + -able (suffix meaning ‘creating an effect or influence’)). Prendre is derived from Latin prēndere, present active infinitive of prēndō, a variant of prehendō (“to catch, lay hold of; to grasp; to grab, snatch; to seize, take”), ultimately from Proto-Indo-European *ghed- (“to find; to hold; to seize, take”). The intrusive g in the English word was modelled after words like deign and reign.
PIE word *h1én From impregnate (verb) + -able (suffix meaning ‘able or fit to be done’ forming adjectives). Impregnate is either derived from impregnate (“pregnant”, adjective), or from its etymon Medieval Latin or Late Latin impraegnātus (“made pregnant”), past participle of impraegnō (“to make pregnant”), from Latin im- (a variant of in- (prefix meaning ‘in, inside, within’)) + praegnāre (“pregnant”) (from praegnāns, a variant of praegnās (“pregnant”), from prae- (prefix meaning ‘before; in front’) + *gnāscor (archaic), nāscor (“to be born; to grow, spring forth; to arise, proceed”) (ultimately from Proto-Indo-European *ǵenh1- (“to beget; to give birth; to produce”)).
Across languages
Translations
76 source translations are retained for this English entry.
Bulgarian:
непревзимаем
(neprevzimaem)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Catalan:
impregnable
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Catalan:
impenetrable
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Catalan:
inexpugnable
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Chinese Mandarin:
固若金湯 /固若金汤
(gùruòjīntāng)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Chinese Mandarin:
堅不可摧 /坚不可摧
(jiānbùkěcuī)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Chinese Mandarin:
險固 /险固
(xiǎngù)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Czech:
nedobytný
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Dutch:
ondoordringbaar
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Finnish:
läpipääsemätön
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Finnish:
läpäisemätön
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Finnish:
murtumaton
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Finnish:
valloittamaton
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
French:
inattaquable
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Georgian:
შეუვალი
(šeuvali)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
German:
sturmfrei
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
German:
unangreifbar
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
German:
unbezwingbar
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
German:
uneinnehmbar
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Greek:
άπαρτος
(ápartos)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Greek:
απόρθητος
(apórthitos)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Hindi:
अभेद्य
(abhedya)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Hungarian:
bevehetetlen
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Irish:
dochloíte
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Italian:
impenetrabile
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Italian:
inespugnabile
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Italian:
inattaccabile
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Japanese:
鐵壁
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Japanese:
鉄壁
(teppeki)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Latin:
adamantinus
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Latin:
inexpugnābilis
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Manx:
neughowallagh
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Romanian:
impregnabil
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Russian:
непристу́пный
(nepristúpnyj)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Sanskrit:
अयोध्य
(ayodhya)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Serbo-Croatian:
неосво̀јив
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Serbo-Croatian:
neosvòjiv
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Telugu:
అజేయము
(ajēyamu)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Vietnamese:
hiểm
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Yiddish:
אומאײַננעמיק
(umaynnemik)
— of a fortress or other fortified place: able to withstand all attacks — see also impenetrable, inconquerable, unvanquishable
Bulgarian:
непревзимаем
(neprevzimaem)
— too strong to be defeated or overcome — see also invincible
Catalan:
impenetrable
— too strong to be defeated or overcome — see also invincible
Catalan:
inexpugnable
— too strong to be defeated or overcome — see also invincible
Czech:
nedobytný
— too strong to be defeated or overcome — see also invincible
Finnish:
horjumaton
— too strong to be defeated or overcome — see also invincible
Finnish:
järkähtämätön
— too strong to be defeated or overcome — see also invincible
Finnish:
järkkymätön
— too strong to be defeated or overcome — see also invincible
Finnish:
valloittamaton
— too strong to be defeated or overcome — see also invincible
French:
impénétrable
— too strong to be defeated or overcome — see also invincible
German:
unangreifbar
— too strong to be defeated or overcome — see also invincible
German:
unbezwingbar
— too strong to be defeated or overcome — see also invincible
German:
uneinnehmbar
— too strong to be defeated or overcome — see also invincible
Greek:
ακυρίευτος
(akyríeftos)
— too strong to be defeated or overcome — see also invincible
Greek:
απόρθητος
(apórthitos)
— too strong to be defeated or overcome — see also invincible
Ancient Greek:
ἀνάλωτος
(análōtos)
— too strong to be defeated or overcome — see also invincible
Hungarian:
bevehetetlen
— too strong to be defeated or overcome — see also invincible
Irish:
dochloíte
— too strong to be defeated or overcome — see also invincible
Italian:
imprendibile
— too strong to be defeated or overcome — see also invincible
Italian:
inespugnabile
— too strong to be defeated or overcome — see also invincible
Italian:
invulnerabile
— too strong to be defeated or overcome — see also invincible
Italian:
inattaccabile
— too strong to be defeated or overcome — see also invincible
Japanese:
難攻不落の
(nankoufuraku no)
— too strong to be defeated or overcome — see also invincible
Romanian:
impregnabil
— too strong to be defeated or overcome — see also invincible
Romanian:
inexpugnabil
— too strong to be defeated or overcome — see also invincible
Romanian:
impenetrabil
— too strong to be defeated or overcome — see also invincible
Russian:
недосту́пный
(nedostúpnyj)
— too strong to be defeated or overcome — see also invincible
Russian:
непристу́пный
(nepristúpnyj)
— too strong to be defeated or overcome — see also invincible
Russian:
неуязви́мый
(neujazvímyj)
— too strong to be defeated or overcome — see also invincible
Sanskrit:
अयोध्य
(ayodhya)
— too strong to be defeated or overcome — see also invincible
Spanish:
inexpugnable
— too strong to be defeated or overcome — see also invincible
Finnish:
hedelmällinen
— capable of being impregnated
French:
imprégnable
— capable of being impregnated
Japanese:
受精可能な
(juseikanou na)
— capable of being impregnated
Japanese:
受胎可能な
(jutaikanou na)
— capable of being impregnated
Spanish:
impregnable
— capable of being impregnated