perfect set

noun

Detailed reference entry for the English word "perfect-set", 11-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Wiktionary, and usage frequency ranked against an open word-frequency list covering the top 100,000 English words. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "perfect-set" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "perfect-set" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

The verdict

“perfect set” is outside the top-ranked English vocabulary, used as a noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) — A set which is equal to its set of limit points. That is, a set A is perfect if A'=A.

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Key facts for perfect set
PropertyValue
Headwordperfect set
LanguageEnglish
Part of speechNoun
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “perfect set” sits in English frequency

perfect set falls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Spelling & Dictionary Insight

The English entry for perfect set is 11 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "A set which is equal to its set of limit points. That is, a set A is perfect if A'=A.".

No misspelling variants are generated for perfect set in our index, suggesting the orthography follows predictable English patterns. It is not paired with a close-neighbour confusable in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

No explicit etymology string is stored for this entry, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is perfect set, spelled P-E-R-F-E-C-T- -S-E-T, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    A set which is equal to its set of limit points. That is, a set A is perfect if A'=A.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Cite this page

Free to reuse with attribution (CC BY-SA). Copy the citation:

PlainSpell, “perfect set, English word data” (May 6, 2026). Derived from Wiktionary (kaikki.org, CC BY-SA) and an open word-frequency list. https://plainspell.com/en/word/perfect-set

Frequently Asked Questions

How do you spell "perfect set"?
"perfect set" is spelled P-E-R-F-E-C-T- -S-E-T.
What does "perfect set" mean?
As a noun, "perfect set" means: A set which is equal to its set of limit points. That is, a set A is perfect if A'=A.
What language does "perfect set" come from?
"perfect set" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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.

Using “perfect set”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is P-E-R-F-E-C-T- -S-E-T - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Nearby English words

Other entries that begin with the letter P in our English index:

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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 FrequencyWords open word-frequency list