impenetrability
noun
impenetrability is spelled I-M-P-E-N-E-T-R-A-B-I-L-I-T-Y: 15 letters. It appears about once in every 38 million words in written English, the 189,524th most frequent word form (wordfreq, 2021 data). As a noun, impenetrability means “The characteristic of being impenetrable; invulnerability” (English Wiktionary, September 2026). The plural of impenetrability is impenetrabilities.
How many letters and syllables are in impenetrability?
| Letters | 15: I-M-P-E-N-E-T-R-A-B-I-L-I-T-Y |
|---|---|
| In writing | about once in every 38 million words; the 189,524th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is impenetrability?
Impenetrability appears about once in every 38 million words in written English, the 189,524th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce impenetrability?
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-impenetrability.wav, Wikimedia Commons (author and licence on each file's page).
Forms of impenetrability
- impenetrabilities plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does impenetrability mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The characteristic of being impenetrable; invulnerability.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Impenetrability in Spanish, French, German and Portuguese
In the sense the characteristic of being impenetrable:
| Language | Words |
|---|---|
| French | impénétrabilité |
| Spanish | impenetrabilidad |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.