immobilise

verb

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

The verdict

“immobilise” is uncommon English (outside the top frequency list), classed as a verb. 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) - Alternative spelling of immobilize.

Corpus desk

Index EN-immobilise · immobilise · English

immobilise · 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 "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 immobilise
PropertyValue
Headwordimmobilise
LanguageEnglish
Part of speechVerb
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “immobilise” in English

immobilisesits 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

immobilise is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. Gloss: "Alternative spelling of immobilize.".

We couldn't generate a plausible misspelling set for immobilise, a sign its spelling follows regular English conventions. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.

Etymologically, the entry records: From French immobiliser, equivalent to immobile + -ise. The correct English form is immobilise, spelled I-M-M-O-B-I-L-I-S-E.

Definition

  1. 1
    Alternative spelling of immobilize.

Recorded use

Wiktionary examples

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

  1. For the past three-and-half years the City of Philadelphia has been successfully operating commuter services within city boundaries. The aim is to attract motorists to the rail, to relieve street traffic which has tended to immobilise the city.
  2. Also attached to the pillar were the jougs - an iron collar used to immobilise petty offenders in the same way as the pillory was used in England.

Etymology

From French immobiliser, equivalent to immobile + -ise.

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 "immobilise"?
"immobilise" is spelled I-M-M-O-B-I-L-I-S-E.
What does "immobilise" mean?
As a verb, "immobilise" means: Alternative spelling of immobilize.
What is the origin of the word "immobilise"?
From French immobiliser, equivalent to immobile + -ise. 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