unassailable
/ˌʌnəˈseɪləbl̩/adjective, noun
unassailable is spelled U-N-A-S-S-A-I-L-A-B-L-E: 12 letters and 5 syllables. It appears about once in every 3 million words in written English, the 50,539th most frequent word form (wordfreq, 2021 data). As an adjective, unassailable means “Secure against attack; impregnable” (English Wiktionary, September 2026).
How many letters and syllables are in unassailable?
| Letters | 12: U-N-A-S-S-A-I-L-A-B-L-E |
|---|---|
| Syllables | 5 (from its American pronunciation) |
| In writing | about once in every 3 million words; the 50,539th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is unassailable?
Unassailable appears about once in every 3 million words in written English, the 50,539th 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 unassailable?
- /ˌʌnəˈseɪləbl̩/
Unassailable has 5 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-unassailable.wav, Wikimedia Commons (author and licence on each file's page).
Forms of unassailable
- more unassailable comparative
- most unassailable superlative
- unassailables plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does unassailable mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Secure against attack; impregnable.
- 2
Undeniable, incontestable or incontrovertible.
She won the debate with her unassailable logic.
noun
- 1
Something, such as a belief, that cannot be assailed.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Unassailable in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | inattaquable, inexpugnable , indéniable, incontestable |
| German | unangreifbar , unanfechtbar |
| Spanish | inexpugnable , incontestable |
| Portuguese | incontestável |
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.
Where does unassailable come from?
From un- + assailable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).