unalterable
adjective
unalterable is spelled U-N-A-L-T-E-R-A-B-L-E: 11 letters and 5 syllables. It appears about once in every 9 million words in written English, the 88,353rd most frequent word form (wordfreq, 2021 data). As an adjective, unalterable means “Incapable of being altered, or of changing” (English Wiktionary, September 2026).
How many letters and syllables are in unalterable?
| Letters | 11: U-N-A-L-T-E-R-A-B-L-E |
|---|---|
| Syllables | 5 (from its American pronunciation) |
| In writing | about once in every 9 million words; the 88,353rd 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 unalterable?
Unalterable appears about once in every 9 million words in written English, the 88,353rd 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 unalterable?
Unalterable 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-unalterable.wav, Wikimedia Commons (author and licence on each file's page).
Forms of unalterable
- more unalterable comparative
- most unalterable superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does unalterable mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Incapable of being altered, or of changing.
- 2
Irreversible, irrevocable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Unalterable in Spanish, French, German and Portuguese
In the sense incapable of being changed:
| Language | Words |
|---|---|
| French | inaltérable |
| German | unumstößlich |
| Portuguese | inalterável |
| Spanish | inalterable |
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 unalterable come from?
From un- + alterable.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).