formalise

verb

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

The verdict

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

Corpus desk

Index EN-formalise · formalise · English

formalise · 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 "F" 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 formalise
PropertyValue
Headwordformalise
LanguageEnglish
Part of speechVerb
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “formalise” in English

formalisesits 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

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

The misspelling generator found no plausible variants for formalise, which points to an orthography that plays by predictable English rules. This entry stands alone in our confusable dataset, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From formal + -ise. The correct English form is formalise, spelled F-O-R-M-A-L-I-S-E.

Definition

  1. 1
    Alternative spelling of formalize.

Recorded use

Wiktionary example

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

  1. "Additionally, new part-time contracts and flexible working rosters and patterns will also encourage a more diverse workforce that can fit shifts around other commitments, while current voluntary working arrangements on Sundays will be formalised to meet rising demand for weekend travel services."

Etymology

From formal + -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 "formalise"?
"formalise" is spelled F-O-R-M-A-L-I-S-E.
What does "formalise" mean?
As a verb, "formalise" means: Alternative spelling of formalize.
What is the origin of the word "formalise"?
From formal + -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