mutable

/ˈmjuːtəbəl/

//ˈmjuːtəbəl// adj

By · According to Wiktionary data (CC BY-SA) ·

"mutable" is a 7-letter English headword indexed on PlainSpell.

The verdict

“mutable” is uncommon English (frequency #58,874 among 4,057 “M” headwords), classed as an adjective. The kind of spelling people second-guess.

#58,874
frequency rank, English
4,057
“M” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Changeable, dynamic, evolutive; inclined to change, evolve, mutate.

Corpus desk

Index EN-mutable · mutable · English

mutable · rank #58,874 · 0 variants · 0 confusables

  • FREQ-RARE #58,874
  • LEN-LONG 7 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 4,057
  • PHOTO-FINISH muskrat

Nearest frequency peer: muskrat (-1 rank slots)

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.

Long-tail ranks near “mutable”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “mutable” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for mutable
PropertyValue
Headwordmutable
LanguageEnglish
Part of speechAdjective
IPA/ˈmjuːtəbəl/
Letters7
Frequency rank#58,874
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “mutable” in English

This scale runs from the tiny cluster of words that carry ordinary speech (left) to the long tail of words almost nobody reaches for (right).mutablefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “muskrat” (#58,873), “mutating” (#58,875), “Muscovite” (#58,872). Among 4,057 “M” headwords, “mutable” is #58,874. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

mutable is uncommon English at frequency #58,874 among 4,057 “M” headwords, classed as anadjective, transcribed /ˈmjuːtəbəl/. Rarity is why readers land here mid-draft. 3 senses are on record.

mutable has no tracked misspelling variants, which points to an orthography that plays by predictable English rules. We don't track a confusable pairing for this entry, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Middle English mutable, from Old French mutable, from Latin mutabilis (“liable to change”). By surface analysis, muta- + -able. The correct English form is mutable, spelled M-U-T-A-B-L-E.

Definition

  1. 1
    Changeable, dynamic, evolutive; inclined to change, evolve, mutate.
  2. 2
    Having a value that is changeable during program execution.
  3. 3
    Being one of the signs Gemini, Virgo, Sagittarius and Pisces, associated with adaptability, flexibility and sympathy.

Recorded use

Wiktionary examples

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

  1. Vndoughtedly constaunce is an honourable vertue, as inconstance is reprochefull and odious. Wherfore that man whiche is mutable for euerye occasyon, muste nedes often repente hym, and in moche repentance is nat only moche foly, but also great detriment: whiche euery wyse man wyll eschue if he can.
  2. For the mutable ranke-ſented Meynie, / Let them regard me, as I doe not flatter, / And therein behold themſelues.

Etymology

From Middle English mutable, from Old French mutable, from Latin mutabilis (“liable to change”). By surface analysis, muta- + -able.

Synonyms

abateablealterablechangeabledynamiceditableinconstantmodifiablemutablevariable

Antonyms

immutable

This word in other languages

mutable(Français)mutabel(Deutsch)mutável(Português)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "mutable"?
"mutable" is spelled M-U-T-A-B-L-E. The IPA pronunciation is /ˈmjuːtəbəl/.
What does "mutable" mean?
As an adjective, "mutable" means: Changeable, dynamic, evolutive; inclined to change, evolve, mutate.
How do you pronounce "mutable"?
The IPA (International Phonetic Alphabet) transcription for "mutable" is /ˈmjuːtəbəl/. 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 "mutable"?
From Middle English mutable, from Old French mutable, from Latin mutabilis (“liable to change”). By surface analysis, muta- + -able. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "mutable", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 7 letters (nearest by frequency rank).

muskrat#58,873moneyed#58,863Meriden#58,843outsold#58,910

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

Source: FrequencyWords open word-frequency list