indefinable

adj

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

The verdict

“indefinable” is uncommon English (frequency #78,711 among 2,140 “I” headwords), classed as an adjective. The kind of spelling people second-guess.

#78,711
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - That which cannot be precisely defined or put into words.

Corpus desk

Index EN-indefinable · indefinable · English

indefinable · rank #78,711 · 0 variants · 0 confusables

  • FREQ-RARE #78,711
  • LEN-MEGA 11 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH incognita

Nearest frequency peer: incognita (-3 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 “indefinable”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for indefinable
PropertyValue
Headwordindefinable
LanguageEnglish
Part of speechAdjective
Letters11
Frequency rank#78,711
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “indefinable” 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).indefinablefalls 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: “incognita” (#78,708), “infinitesimally” (#78,716), “impinging” (#78,705). Among 2,140 “I” headwords, “indefinable” is #78,711. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

indefinable is uncommon English at frequency #78,711 among 2,140 “I” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

No misspelling variants are generated for indefinable in our index, a straightforward case of a spelling with little room for common typos. No confusable counterpart is on file for this word, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From in- + definable. The correct English form is indefinable, spelled I-N-D-E-F-I-N-A-B-L-E.

Definition

  1. 1
    That which cannot be precisely defined or put into words.
  2. 2
    That which defies description; indescribable.

Recorded use

Wiktionary example

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

  1. They apparently have a theory that the indefinable psychic gift that they call magic, and which we might designate "psychicism", can be acquired by accosting the soul of a murdered man in a burial ground at midnight.

Etymology

From in- + definable.

Synonyms

Antonyms

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 "indefinable"?
"indefinable" is spelled I-N-D-E-F-I-N-A-B-L-E.
What does "indefinable" mean?
As an adjective, "indefinable" means: That which cannot be precisely defined or put into words.
What is the origin of the word "indefinable"?
From in- + definable. 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 "indefinable", not the corpus desk frequency band.

Same letter count

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

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

Source: FrequencyWords open word-frequency list