mutability

/ˌmjuːtəˈbɪlɪti/

//ˌmjuːtəˈbɪlɪti// noun

"mutability" is a 10-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The quality or state of being mutable.

Corpus desk

Index EN-mutability · mutability · English

mutability · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "M" 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 mutability
PropertyValue
Headwordmutability
LanguageEnglish
Part of speechNoun
IPA/ˌmjuːtəˈbɪlɪti/
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mutability” in English

mutabilitysits 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

mutability is uncommon English outside the top frequency list, classed as anoun, transcribed /ˌmjuːtəˈbɪlɪti/. Rarity is why readers land here mid-draft. Gloss: "The quality or state of being mutable.".

Our edit-distance generator produced no likely misspellings for mutability, suggesting the orthography follows predictable English patterns. This headword has no recorded confusable partner, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Middle English mutabilite, from Old French mutabilite, from Latin mutabilitas; equivalent to mutable + -ity. The correct English form is mutability, spelled M-U-T-A-B-I-L-I-T-Y.

Definition

  1. 1
    The quality or state of being mutable.

Recorded use

Wiktionary examples

These source excerpts show how mutability appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. He did indeed account somewhat unfairly for this sudden change; for besides some hard and unjust surmises concerning female fickleness and mutability, he began to suspect that he owed this want of civility to his want of horses […]
  2. There rise authors now and then, who seem proof against the mutability of language, because they have rooted themselves in the unchanging principles of human nature.

Etymology

From Middle English mutabilite, from Old French mutabilite, from Latin mutabilitas; equivalent to mutable + -ity.

This word in other languages

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 "mutability"?
"mutability" is spelled M-U-T-A-B-I-L-I-T-Y. The IPA pronunciation is /ˌmjuːtəˈbɪlɪti/.
What does "mutability" mean?
As a noun, "mutability" means: The quality or state of being mutable.
How do you pronounce "mutability"?
The IPA (International Phonetic Alphabet) transcription for "mutability" is /ˌmjuːtəˈbɪlɪti/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "mutability"?
From Middle English mutabilite, from Old French mutabilite, from Latin mutabilitas; equivalent to mutable + -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