unauthorised

adj

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

"unauthorised" is a 12-letter English headword indexed on PlainSpell.

The verdict

“unauthorised” has 17 generated spelling variants in the English index at frequency #28,775. The variants make it a useful spelling check.

#28,775
frequency rank, English
1,433
“U” headwords
17
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Alternative spelling of unauthorized.

Corpus desk

Index EN-unauthorised · unauthorised · English

unauthorised · rank #28,775 · 17 variants · 1 confusable

  • FREQ-MID #28,775
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-LOW 1 pairs
  • VAR-HIGH 17 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH UMP

Nearest frequency peer: UMP (-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 “unauthorised”

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

corpus weight

What this shows “unauthorised” 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).

unauthorised vs unauthorized
92% similar

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

Key facts for unauthorised
PropertyValue
Headwordunauthorised
LanguageEnglish
Part of speechAdjective
Letters12
Frequency rank#28,775
Misspellings tracked17
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “unauthorised”

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).unauthorisedlands here:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “UMP” (#28,774), “uncensored” (#28,776), “ukulele” (#28,773). Among 1,433 “U” headwords, “unauthorised” is #28,775. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 17 spelling variants around unauthorised, anadjective. Corpus frequency is #28,775 among 1,433 “U” headwords. Dominant gloss: "Alternative spelling of unauthorized.".

Our generated misspelling index lists 17 likely wrong-spelling variants for unauthorised, with forms such as "nuauthorised", "uanuthorised", and "unatuhorised". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 1 confusable-pair relationship, "unauthorized", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From un- + authorised. The correct English form is unauthorised, spelled U-N-A-U-T-H-O-R-I-S-E-D.

Definition

  1. 1
    Alternative spelling of unauthorized.

Recorded use

Wiktionary examples

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

  1. A dozen similar, but smaller footwarmers were made at Doncaster, without official sanction, and placed in the coaches of a train conveying some of the directors to London. Sturrock was taken to task by the chairman for having incurred this unauthorised expenditure, but before he left the meeting, the directors had ordered 200 footwarmers for public use.
  2. Indeed, the day before Farage was milkshaked, Leave EU issued an unauthorised, and now withdrawn, re-edit of a Beastie Boys video, showing him and Ann Widdecombe pouring beer over their political opponents.

Etymology

From un- + authorised.

Common misspellings

Also misspelled as:

  • nuauthorised
  • uanuthorised
  • unatuhorised
  • unauhtorised
  • unauthhorised
  • unauthoirsed
  • unauthoriesd
  • unauthorisde
  • unauthorisedd
  • unauthorissed
  • unauthorrised
  • unauthorsied
  • unauthroised
  • unautohrised
  • unautthorised
  • unnauthorised
  • unuathorised

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of unauthorised - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

nuauthorised2uanuthorised2unatuhorised2unauhtorised2unauthhorised1unauthoirsed2unauthoriesd2unauthorisde2
Edit distance from "unauthorised"

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 "unauthorised"?
"unauthorised" is spelled U-N-A-U-T-H-O-R-I-S-E-D.
What does "unauthorised" mean?
As an adjective, "unauthorised" means: Alternative spelling of unauthorized.
What words are commonly confused with "unauthorised"?
"unauthorised" is commonly confused with "unauthorized". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
What is the origin of the word "unauthorised"?
From un- + authorised. 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 "unauthorised", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 12 letters (nearest by frequency rank).

unforgivable#28,777progesterone#28,677commendation#28,874disorganized#28,894

Similar misspelling depth

Headwords with a similar count of attested misspellings (17 here; floor ≥5).

typography17 variantsstakeholder17 variantsrestructure17 variantscriminology17 variants

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

Source: FrequencyWords open word-frequency list