invalidation

/ɪnˌvæl.əˈdeɪ.ʃən/

//ɪnˌvæl.əˈdeɪ.ʃən// noun

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

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

The verdict

“invalidation” is uncommon English (frequency #72,429 among 2,140 “I” headwords), classed as a noun. The kind of spelling people second-guess.

#72,429
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The act of invalidating, or the state of being invalidated

Corpus desk

Index EN-invalidation · invalidation · English

invalidation · rank #72,429 · 0 variants · 0 confusables

  • FREQ-RARE #72,429
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH intriguingly

Nearest frequency peer: intriguingly (-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.

Long-tail ranks near “invalidation”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “invalidation” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for invalidation
PropertyValue
Headwordinvalidation
LanguageEnglish
Part of speechNoun
IPA/ɪnˌvæl.əˈdeɪ.ʃən/
Letters12
Frequency rank#72,429
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “invalidation” in English

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

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

Ticks step logarithmically, so each one marks a roughly tenfold drop in how often the word turns up. Rare peers in the same band: “intriguingly” (#72,428), “invincibles” (#72,430), “inti” (#72,427). Among 2,140 “I” headwords, “invalidation” is #72,429. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

invalidation is uncommon English at frequency #72,429 among 2,140 “I” headwords, classed as anoun, transcribed /ɪnˌvæl.əˈdeɪ.ʃən/. Rarity is why readers land here mid-draft. Gloss: "The act of invalidating, or the state of being invalidated".

No misspelling variants are generated for invalidation in our index, a straightforward case of a spelling with little room for common typos. This headword has no recorded confusable partner, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From invalidate + -ion or in- + validation. The correct English form is invalidation, spelled I-N-V-A-L-I-D-A-T-I-O-N.

Definition

  1. 1
    The act of invalidating, or the state of being invalidated

Etymology

From invalidate + -ion or in- + validation.

Synonyms

abolitionabrogationannulmentcancellationdeauthenticationdevalidationinvalidationnullificationrenunciationrevocationterminationvitiation

Antonyms

confirmationestablishmentfoundationvalidation

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 "invalidation"?
"invalidation" is spelled I-N-V-A-L-I-D-A-T-I-O-N. The IPA pronunciation is /ɪnˌvæl.əˈdeɪ.ʃən/.
What does "invalidation" mean?
As a noun, "invalidation" means: The act of invalidating, or the state of being invalidated
How do you pronounce "invalidation"?
The IPA (International Phonetic Alphabet) transcription for "invalidation" is /ɪnˌvæl.əˈdeɪ.ʃən/. 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 "invalidation"?
From invalidate + -ion or in- + validation. 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 "invalidation", not the corpus desk frequency band.

Same letter count

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

intriguingly#72,428inordinately#72,423incomparably#72,419hypoglycemic#72,407

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

Source: FrequencyWords open word-frequency list