incontestable

adj

"incontestable" is a 13-letter English headword indexed on PlainSpell.

The verdict

“incontestable” is uncommon English (frequency #98,253 among 2,140 “I” headwords), classed as an adjective. The kind of spelling people second-guess.

#98,253
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not contestable; indisputable; certain.

Corpus desk

Index EN-incontestable · incontestable · English

incontestable · rank #98,253 · 0 variants · 0 confusables

  • FREQ-RARE #98,253
  • LEN-MEGA 13 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH inconspicuous…

Nearest frequency peer: inconspicuously (-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 “incontestable”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for incontestable
PropertyValue
Headwordincontestable
LanguageEnglish
Part of speechAdjective
Letters13
Frequency rank#98,253
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “incontestable” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).incontestablefalls in this rarity band:

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Rare peers in the same band: “inconspicuously” (#98,252), “incentivised” (#98,251), “industrialize” (#98,256). Among 2,140 “I” headwords, “incontestable” is #98,253. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

incontestable is uncommon English at frequency #98,253 among 2,140 “I” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Not contestable; indisputable; certain.".

No misspelling variants are generated for incontestable in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From in- + contestable. The correct English form is incontestable, spelled I-N-C-O-N-T-E-S-T-A-B-L-E.

Definition

  1. 1
    Not contestable; indisputable; certain.

Recorded use

Wiktionary example

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

  1. That he was the greatest 100m runner of his generation was incontestable.

Etymology

From in- + contestable.

This word in other languages

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 "incontestable"?
"incontestable" is spelled I-N-C-O-N-T-E-S-T-A-B-L-E.
What does "incontestable" mean?
As an adjective, "incontestable" means: Not contestable; indisputable; certain.
What is the origin of the word "incontestable"?
From in- + contestable. 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 "incontestable", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 13 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list