undesirable

/ˌʌndɪˈzaɪɹəbəl/

//ˌʌndɪˈzaɪɹəbəl// adj

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

"undesirable" is a 11-letter English headword indexed on PlainSpell.

The verdict

“undesirable” has 17 generated spelling variants in the English index at frequency #18,211. The variants make it a useful spelling check.

#18,211
frequency rank, English
1,433
“U” headwords
17
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not desirable, objectionable or not likely to please.

Corpus desk

Index EN-undesirable · undesirable · English

undesirable · rank #18,211 · 17 variants · 1 confusable

  • FREQ-MID #18,211
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-LOW 1 pairs
  • VAR-HIGH 17 variants
  • BOOK-MID 1,433
  • PHOTO-FINISH understatement

Nearest frequency peer: understatement (-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 “undesirable”

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

corpus weight

What this shows “undesirable” 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).

undesirable vs undeniable
82% similar

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

Key facts for undesirable
PropertyValue
Headwordundesirable
LanguageEnglish
Part of speechAdjective
IPA/ˌʌndɪˈzaɪɹəbəl/
Letters11
Frequency rank#18,211
Misspellings tracked17
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “undesirable”

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right).undesirablelands here:

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “understatement” (#18,210), “unfairly” (#18,212), “unbeaten” (#18,209). Among 1,433 “U” headwords, “undesirable” is #18,211. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 17 spelling variants around undesirable (IPA /ˌʌndɪˈzaɪɹəbəl/), anadjective. Corpus frequency is #18,211 among 1,433 “U” headwords. Dominant gloss: "Not desirable, objectionable or not likely to please.".

Our generated misspelling index lists 17 likely wrong-spelling variants for undesirable, with forms such as "nudesirable", "udnesirable", and "unddesirable". 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, "undeniable", since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: From un- + desirable. The correct English form is undesirable, spelled U-N-D-E-S-I-R-A-B-L-E.

Definition

  1. 1
    Not desirable, objectionable or not likely to please.

Recorded use

Wiktionary examples

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

  1. There would be no need for any of the animals to come in contact with human beings, which would clearly be most undesirable.
  2. Chronic venous disease includes cosmetically undesirable telangiectasias, varicose veins, venous ulceration, and claudication.

Etymology

From un- + desirable.

Antonyms

desirable

This word in other languages

indeseable(Español)indésirable(Français)unerwünscht(Deutsch)indesejável(Português)

Common misspellings

Also misspelled as:

  • nudesirable
  • udnesirable
  • unddesirable
  • undeisrable
  • undesiarble
  • undesirabble
  • undesirabel
  • undesirablle
  • undesiralbe
  • undesirbale
  • undesirible
  • undesirrable
  • undesriable
  • undessirable
  • undseirable
  • unedsirable
  • unndesirable

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of undesirable - 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.

nudesirable2udnesirable2unddesirable1undeisrable2undesiarble2undesirabble1undesirabel2undesirablle1
Edit distance from "undesirable"

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 "undesirable"?
"undesirable" is spelled U-N-D-E-S-I-R-A-B-L-E. The IPA pronunciation is /ˌʌndɪˈzaɪɹəbəl/.
What does "undesirable" mean?
As an adjective, "undesirable" means: Not desirable, objectionable or not likely to please.
What words are commonly confused with "undesirable"?
"undesirable" is commonly confused with "undeniable". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "undesirable"?
The IPA (International Phonetic Alphabet) transcription for "undesirable" is /ˌʌndɪˈzaɪɹəbəl/. 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 "undesirable"?
From un- + desirable. 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 "undesirable", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 11 letters (nearest by frequency rank).

unification#18,213temperament#18,203withholding#18,225referencing#18,174

Similar misspelling depth

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

computation17 variantsConstantine17 variantsencompassing17 variantsexceedingly17 variants

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

Source: FrequencyWords open word-frequency list