immutably

/ɪˈmjuːtəblɪ/

//ɪˈmjuːtəblɪ// adv

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

The verdict

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

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - In an immutable manner. In a way that cannot be varied, or changed.

Corpus desk

Index EN-immutably · immutably · English

immutably · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "I" 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 immutably
PropertyValue
Headwordimmutably
LanguageEnglish
Part of speechAdverb
IPA/ɪˈmjuːtəblɪ/
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “immutably” in English

immutablysits 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

immutably is uncommon English outside the top frequency list, classed as anadverb, transcribed /ɪˈmjuːtəblɪ/. Rarity is why readers land here mid-draft. Gloss: "In an immutable manner. In a way that cannot be varied, or changed.".

Our edit-distance generator produced no likely misspellings for immutably, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From immutable + -ly. The correct English form is immutably, spelled I-M-M-U-T-A-B-L-Y.

Definition

  1. 1
    In an immutable manner. In a way that cannot be varied, or changed.

Recorded use

Wiktionary example

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

  1. My task was a very hard one; but, as I was absolutely resolved - as my cousins saw at length that my mind was really and immutably fixed on making a just division of the property....they yielded at length.

Etymology

From immutable + -ly.

Synonyms

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 "immutably"?
"immutably" is spelled I-M-M-U-T-A-B-L-Y. The IPA pronunciation is /ɪˈmjuːtəblɪ/.
What does "immutably" mean?
As an adverb, "immutably" means: In an immutable manner. In a way that cannot be varied, or changed.
How do you pronounce "immutably"?
The IPA (International Phonetic Alphabet) transcription for "immutably" is /ɪˈmjuːtəblɪ/. 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 "immutably"?
From immutable + -ly. 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