uncommonness

noun

"uncommonness" is a 12-letter English headword indexed on PlainSpell.

The verdict

“uncommonness” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The state or quality of being uncommon; rarity.

Corpus desk

Index EN-uncommonness · uncommonness · English

uncommonness · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "U" thin
  • PHOTO-UNK Peer pending

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.

Key facts for uncommonness
PropertyValue
Headworduncommonness
LanguageEnglish
Part of speechNoun
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “uncommonness” in English

uncommonnessranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

uncommonness is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The state or quality of being uncommon; rarity.".

We couldn't generate a plausible misspelling set for uncommonness, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From uncommon + -ness. The correct English form is uncommonness, spelled U-N-C-O-M-M-O-N-N-E-S-S.

Definition

  1. 1
    The state or quality of being uncommon; rarity.

Recorded use

Wiktionary examples

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

  1. The uncommonness of the gem is what gives it its value.
  2. It is only when people refuse to admit the uncommonness of some persons and the circumstances surrounding them, that erroneous conceits are nourished, and their feelings pained.

Etymology

From uncommon + -ness.

Synonyms

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.

Frequently Asked Questions

How do you spell "uncommonness"?
"uncommonness" is spelled U-N-C-O-M-M-O-N-N-E-S-S.
What does "uncommonness" mean?
As a noun, "uncommonness" means: The state or quality of being uncommon; rarity.
What is the origin of the word "uncommonness"?
From uncommon + -ness. 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.

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

Source: FrequencyWords open word-frequency list