perpetuity

/ˌpɜː(ɹ)pɪˈtjuːɪti/

//ˌpɜː(ɹ)pɪˈtjuːɪti// noun

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

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

The verdict

“perpetuity” has 15 generated spelling variants in the English index at frequency #32,965. The variants make it a useful spelling check.

#32,965
frequency rank, English
4,417
“P” headwords
15
tracked misspellings
1
confusable pair

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The quality or state of being perpetual; endless duration; uninterrupted existence.

Corpus desk

Index EN-perpetuity · perpetuity · English

perpetuity · rank #32,965 · 15 variants · 1 confusable

  • FREQ-MID #32,965
  • LEN-MEGA 10 letters
  • VOW-5 5 vowels
  • CONFUS-LOW 1 pairs
  • VAR-HIGH 15 variants
  • BOOK-MID 4,417
  • PHOTO-FINISH Pemberton

Nearest frequency peer: Pemberton (-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.

Rank peers near misspelling magnet “perpetuity”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “perpetuity” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

perpetuity vs perpetuate
80% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for perpetuity
PropertyValue
Headwordperpetuity
LanguageEnglish
Part of speechNoun
IPA/ˌpɜː(ɹ)pɪˈtjuːɪti/
Letters10
Frequency rank#32,965
Misspellings tracked15
Confusable pairs1
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “perpetuity”

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

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

Scale is logarithmic (each tick is 10× rarer). Same rarity band neighbours include “Pemberton” (#32,963), “Phineas” (#32,968), “patrolled” (#32,961). Among 4,417 “P” headwords, “perpetuity” is #32,965. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 15 spelling variants around perpetuity (IPA /ˌpɜː(ɹ)pɪˈtjuːɪti/), anoun. Corpus frequency is #32,965 among 4,417 “P” headwords. Wiktionary lists 4 senses, so context still picks the gloss.

Our generated misspelling index lists 15 likely wrong-spelling variants for perpetuity, with forms such as "eprpetuity", "pepretuity", and "pereptuity". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 1 confusable-pair relationship, "perpetuate", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English perpetuitee, perpetuite, perpetuyte, from Old French perpetüité, ultimately from Latin perpetuitās. The correct English form is perpetuity, spelled P-E-R-P-E-T-U-I-T-Y.

Definition

  1. 1
    The quality or state of being perpetual; endless duration; uninterrupted existence.
  2. 2
    Something that is perpetual.
  3. 3
    A limitation intended to be unalterable and of indefinite duration; a disposition of property which attempts to make it inalienable beyond certain limits fixed or conceived as being fixed by the general law.
  4. 4
    An annuity in which the periodic payments begin on a fixed date and continue indefinitely.

Recorded use

Wiktionary examples

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

  1. Mr. Waller adds that when the railway was authorised in 1897, one of the clauses of the Act authorising the transfer of the line to the North British Railway provided that that company should work it in perpetuity, and it was this clause that caused the interim interdict to be granted.
  2. The gnomic belief that the world is conditioned by love is no idle apothegm. Love, as the instrument of creative agencies and cosmic perpetuity, is no banausic conception.

Etymology

From Middle English perpetuitee, perpetuite, perpetuyte, from Old French perpetüité, ultimately from Latin perpetuitās.

Synonyms

endlessnesseternityendlessness

This word in other languages

perpetuidad(Español)perpétuité(Français)perpetuidade(Português)

Common misspellings

Also misspelled as:

  • eprpetuity
  • pepretuity
  • pereptuity
  • perpetiuty
  • perpettuity
  • perpetuitty
  • perpetuityy
  • perpetuiyt
  • perpetutiy
  • perpeutity
  • perppetuity
  • perpteuity
  • perrpetuity
  • pperpetuity
  • prepetuity

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of perpetuity - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

eprpetuity2pepretuity2pereptuity2perpetiuty2perpettuity1perpetuitty1perpetuityy1perpetuiyt2
Edit distance from "perpetuity"

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 "perpetuity"?
"perpetuity" is spelled P-E-R-P-E-T-U-I-T-Y. The IPA pronunciation is /ˌpɜː(ɹ)pɪˈtjuːɪti/.
What does "perpetuity" mean?
As a noun, "perpetuity" means: The quality or state of being perpetual; endless duration; uninterrupted existence.
What words are commonly confused with "perpetuity"?
"perpetuity" is commonly confused with "perpetuate". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "perpetuity"?
The IPA (International Phonetic Alphabet) transcription for "perpetuity" is /ˌpɜː(ɹ)pɪˈtjuːɪti/. 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 "perpetuity"?
From Middle English perpetuitee, perpetuite, perpetuyte, from Old French perpetüité, ultimately from Latin perpetuitās. 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 "perpetuity", not the corpus desk frequency band.

Same letter count

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

Palmerston#32,959Polynesian#32,973randomness#32,993recitation#32,994

Similar misspelling depth

Headwords with a similar count of attested misspellings (15 here; floor ≥5).

ruthlessly15 variantsminimalism15 variantsmeandering15 variantsluminosity15 variants

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

Source: FrequencyWords open word-frequency list