immutable

adj

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

"immutable" is a 9-letter English headword indexed on PlainSpell.

The verdict

“immutable” has 12 generated spelling variants in the English index at frequency #34,930. The variants make it a useful spelling check.

#34,930
frequency rank, English
2,140
“I” headwords
12
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Unable to be changed without exception.

Corpus desk

Index EN-immutable · immutable · English

immutable · rank #34,930 · 12 variants · 1 confusable

  • FREQ-MID #34,930
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-LOW 1 pairs
  • VAR-MID 12 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH immorality

Nearest frequency peer: immorality (-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.

Rank peers near misspelling magnet “immutable”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “immutable” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

immutable vs immovable
78% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for immutable
PropertyValue
Headwordimmutable
LanguageEnglish
Part of speechAdjective
Letters9
Frequency rank#34,930
Misspellings tracked12
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “immutable”

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).immutablelands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “immorality” (#34,929), “Imogen” (#34,931), “immeasurable” (#34,928). Among 2,140 “I” headwords, “immutable” is #34,930. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 12 spelling variants around immutable, anadjective. Corpus frequency is #34,930 among 2,140 “I” headwords. Wiktionary lists 2 senses, so context still picks the gloss.

Our generated misspelling index lists 12 likely wrong-spelling variants for immutable, with forms such as "immtuable", "immuatble", and "immutabble". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 1 confusable-pair relationship, "immovable", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From Middle English immutable, from Latin immūtābilis (“unchangeable”); im- + mutable. The correct English form is immutable, spelled I-M-M-U-T-A-B-L-E.

Definition

  1. 1
    Unable to be changed without exception.
  2. 2
    Not able to be altered in the memory after its value is set initially.

Recorded use

Wiktionary examples

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

  1. The government has enacted an immutable law.
  2. Mutable as is our nature, it delights in the immutable: and we expect as much constancy as if all time, to say nothing of our own changeableness, had not shewn that ever "the fashion of this world passeth away."

Etymology

From Middle English immutable, from Latin immūtābilis (“unchangeable”); im- + mutable.

Synonyms

batelessfixedimmutableinalterableinvariablepermanentperma-perpetualunabateableunalterableunchangeableundeviating

Antonyms

mutablenonimmutable

This word in other languages

inmutable(Español)immuable(Français)unveränderbar(Deutsch)imutável(Português)

Common misspellings

Also misspelled as:

  • immtuable
  • immuatble
  • immutabble
  • immutabel
  • immutablle
  • immutalbe
  • immutbale
  • immutible
  • immuttable
  • imumtable
  • imutable
  • mimutable

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of immutable - counted as single-character edits (an insertion, a deletion, or a substituted letter). The larger the bar, the easier the typo is to spot; one-edit slips are the ones that sneak past readers.

immtuable2immuatble2immutabble1immutabel2immutablle1immutalbe2immutbale2immutible1
Edit distance from "immutable"

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 "immutable"?
"immutable" is spelled I-M-M-U-T-A-B-L-E.
What does "immutable" mean?
As an adjective, "immutable" means: Unable to be changed without exception.
What words are commonly confused with "immutable"?
"immutable" is commonly confused with "immovable". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "immutable"?
From Middle English immutable, from Latin immūtābilis (“unchangeable”); im- + mutable. 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 "immutable", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

heretical#34,917Kettering#34,947Fulbright#34,896frostbite#34,894

Similar misspelling depth

Headwords with a similar count of attested misspellings (12 here; floor ≥5).

Hangzhou12 variantslinearly12 variantsMacKinnon12 variantsfeasting12 variants

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

Source: FrequencyWords open word-frequency list