indubitably

/ɪnˈdjuː.bɪ.tə.bli/

//ɪnˈdjuː.bɪ.tə.bli// adv

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

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

The verdict

“indubitably” is uncommon English (frequency #75,071 among 2,140 “I” headwords), classed as an adverb. The kind of spelling people second-guess.

#75,071
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - In a manner that leaves no possibility of doubt.

Corpus desk

Index EN-indubitably · indubitably · English

indubitably · rank #75,071 · 0 variants · 0 confusables

  • FREQ-RARE #75,071
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH incongruity

Nearest frequency peer: incongruity (-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.

Frequency neighbourhood for “indubitably”

Lower corpus rank = more everyday usage (inverted bar length for readability)

corpus weight

What this shows Bars show where “indubitably” sits against the nearest ranked English headwords in the FrequencyWords band, not a reprint of letter-browse containment.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for indubitably
PropertyValue
Headwordindubitably
LanguageEnglish
Part of speechAdverb
IPA/ɪnˈdjuː.bɪ.tə.bli/
Letters11
Frequency rank#75,071
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “indubitably” sits in English frequency

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).indubitablylands 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 “incongruity” (#75,070), “inadvisable” (#75,069), “inheritor” (#75,073). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

indubitably is uncommon English at frequency #75,071 among 2,140 “I” headwords, classed as anadverb, transcribed /ɪnˈdjuː.bɪ.tə.bli/. Rarity is why readers land here mid-draft. Gloss: "In a manner that leaves no possibility of doubt.".

Zero misspellings are on record for indubitably in our index, since its letter sequence doesn't invite the usual edit-distance slips. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From indubitable + -ly. The correct English form is indubitably, spelled I-N-D-U-B-I-T-A-B-L-Y.

Definition

  1. 1
    In a manner that leaves no possibility of doubt.

Recorded use

Wiktionary examples

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

  1. Near-synonyms: verifiably, provably
  2. Now his first suspicion was indubitably confirmed.

Etymology

From indubitable + -ly.

This word in other languages

indubitablement(Français)unzweifelhaft(Deutsch)

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 "indubitably"?
"indubitably" is spelled I-N-D-U-B-I-T-A-B-L-Y. The IPA pronunciation is /ɪnˈdjuː.bɪ.tə.bli/.
What does "indubitably" mean?
As an adverb, "indubitably" means: In a manner that leaves no possibility of doubt.
How do you pronounce "indubitably"?
The IPA (International Phonetic Alphabet) transcription for "indubitably" is /ɪnˈdjuː.bɪ.tə.bli/. 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 "indubitably"?
From indubitable + -ly. 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 "indubitably", not the corpus desk frequency band.

Same letter count

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

incongruity#75,070inadvisable#75,069intemperate#75,078Greencastle#75,012

What to do next

You've looked up "indubitably". Here's where to go from here.

  • Usage frequency rank #75,071 among English headwords in this corpus. Corpus statistics
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PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list