involution

/ɪnvəˈluːʃən/

//ɪnvəˈluːʃən// noun

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

"involution" is a 10-letter English headword indexed on PlainSpell.

The verdict

“involution” is uncommon English (frequency #88,471 among 2,140 “I” headwords), classed as a noun. The kind of spelling people second-guess.

#88,471
frequency rank, English
2,140
“I” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Entanglement; a spiralling inwards; intricacy.

Corpus desk

Index EN-involution · involution · English

involution · rank #88,471 · 0 variants · 0 confusables

  • FREQ-RARE #88,471
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-MID 2,140
  • PHOTO-FINISH interspecific

Nearest frequency peer: interspecific (-2 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 “involution”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for involution
PropertyValue
Headwordinvolution
LanguageEnglish
Part of speechNoun
IPA/ɪnvəˈluːʃən/
Letters10
Frequency rank#88,471
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “involution” 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).involutionfalls 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: “interspecific” (#88,469), “intermediation” (#88,468), “Interlaken” (#88,467). Among 2,140 “I” headwords, “involution” is #88,471. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

involution is uncommon English at frequency #88,471 among 2,140 “I” headwords, classed as anoun, transcribed /ɪnvəˈluːʃən/. Rarity is why readers land here mid-draft. 9 senses are on record.

We couldn't generate a plausible misspelling set for involution, typically a sign the spelling maps closely to how the word sounds. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Etymologically, the entry records: From Latin involūtiō, from involvō. The correct English form is involution, spelled I-N-V-O-L-U-T-I-O-N.

Definition

  1. 1
    Entanglement; a spiralling inwards; intricacy.
  2. 2
    A complicated grammatical construction.
  3. 3
    An endofunction whose square is equal to the identity function; a function equal to its inverse.
  4. 4
    The shrinking of an organ (such as the uterus) to a former size.
  5. 5
    The regressive changes in the body occurring with old age.
  6. 6
    A power: the result of raising one number to the power of another.
  7. 7
    A cessation of development or progress involving intense inner competition.
  8. 8
    A state of increased competition for limited resources, requiring great effort to stay ahead.
  9. 9
    The migration of a cell layer inward, sliding over an outer layer of cells. It occurs at gastrulation during embryogenesis.

Recorded use

Wiktionary examples

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

  1. […]usually his attention was diverted from her feet by her shrieks of laughter and the astounding involutions of her huge brown-yellow frame.
  2. ‘Gomez,’ said the mortician, ‘is an expert only on the involutions of his own rectum.’

Etymology

From Latin involūtiō, from involvō.

This word in other languages

involución(Español)involution(Français)

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 "involution"?
"involution" is spelled I-N-V-O-L-U-T-I-O-N. The IPA pronunciation is /ɪnvəˈluːʃən/.
What does "involution" mean?
As a noun, "involution" means: Entanglement; a spiralling inwards; intricacy.
How do you pronounce "involution"?
The IPA (International Phonetic Alphabet) transcription for "involution" is /ɪnvəˈluːʃən/. 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 "involution"?
From Latin involūtiō, from involvō. 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 "involution", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

Interlaken#88,467inconstant#88,460honorarium#88,432Holderness#88,428

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

Source: FrequencyWords open word-frequency list