impenetrably
adverb
impenetrably is spelled I-M-P-E-N-E-T-R-A-B-L-Y: 12 letters. It appears about once in every 47 million words in written English, the 211,986th most frequent word form (wordfreq, 2021 data). As an adverb, impenetrably means “In an impenetrable manner or state; imperviously” (English Wiktionary, September 2026).
How many letters and syllables are in impenetrably?
| Letters | 12: I-M-P-E-N-E-T-R-A-B-L-Y |
|---|---|
| In writing | about once in every 47 million words; the 211,986th 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 impenetrably?
Impenetrably appears about once in every 47 million words in written English, the 211,986th 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).
Forms of impenetrably
- more impenetrably comparative
- most impenetrably superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does impenetrably mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adverb
- 1
In an impenetrable manner or state; imperviously.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Where does impenetrably come from?
From impenetrable + -ly.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).