unalterability

noun

"unalterability" is a 14-letter English headword indexed on PlainSpell.

The verdict

“unalterability” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Synonym of unalterableness.

Corpus desk

Index EN-unalterability · unalterability · English

unalterability · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 14 letters
  • VOW-7 7 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "U" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for unalterability
PropertyValue
Headwordunalterability
LanguageEnglish
Part of speechNoun
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “unalterability” in English

unalterabilitysits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

unalterability is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "Synonym of unalterableness.".

unalterability has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From unalterable + -ity. The correct English form is unalterability, spelled U-N-A-L-T-E-R-A-B-I-L-I-T-Y.

Definition

  1. 1
    Synonym of unalterableness.

Etymology

From unalterable + -ity.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "unalterability"?
"unalterability" is spelled U-N-A-L-T-E-R-A-B-I-L-I-T-Y.
What does "unalterability" mean?
As a noun, "unalterability" means: Synonym of unalterableness.
What is the origin of the word "unalterability"?
From unalterable + -ity. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list