conscientiousness

noun

"conscientiousness" is a 17-letter English headword indexed on PlainSpell.

The verdict

“conscientiousness” is uncommon English (frequency #68,113 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.

#68,113
frequency rank, English
5,599
“C” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The state or characteristic of being conscientious.

Corpus desk

Index EN-conscientiousness · conscientiousness · English

conscientiousness · rank #68,113 · 0 variants · 0 confusables

  • FREQ-RARE #68,113
  • LEN-MEGA 17 letters
  • VOW-7 7 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 5,599
  • PHOTO-FINISH conglomeration

Nearest frequency peer: conglomeration (-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 “conscientiousness”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

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

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for conscientiousness
PropertyValue
Headwordconscientiousness
LanguageEnglish
Part of speechNoun
Letters17
Frequency rank#68,113
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “conscientiousness” 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).conscientiousnessfalls in this rarity band:

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

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “conglomeration” (#68,111), “confit” (#68,110), “consignor” (#68,116). Among 5,599 “C” headwords, “conscientiousness” is #68,113. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

conscientiousness is uncommon English at frequency #68,113 among 5,599 “C” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The state or characteristic of being conscientious.".

Zero misspellings are on record for conscientiousness in our index, since its letter sequence doesn't invite the usual edit-distance slips. This headword has no recorded confusable partner, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From conscientious + -ness. The correct English form is conscientiousness, spelled C-O-N-S-C-I-E-N-T-I-O-U-S-N-E-S-S.

Definition

  1. 1
    The state or characteristic of being conscientious.

Recorded use

Wiktionary examples

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

  1. It is a terrible thing a Man should be put to Death for a Crime he is not Guilty of; yet so oddly Circumstances may meet in the infinite variety of Accidents, that it is possible it should come to pass, all the Wisdom that Judges, and Conscientiousness that Juries may be possess'd of, notwithstanding.
  2. We come now to the greatest and noblest of the Moral Powers of Man; to that power which makes him quite a different order of being from any other that we know of, and which is the glory and crown of his existence:—his Conscientiousness.

Etymology

From conscientious + -ness.

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 "conscientiousness"?
"conscientiousness" is spelled C-O-N-S-C-I-E-N-T-I-O-U-S-N-E-S-S.
What does "conscientiousness" mean?
As a noun, "conscientiousness" means: The state or characteristic of being conscientious.
What is the origin of the word "conscientiousness"?
From conscientious + -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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "conscientiousness", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 17 letters (nearest by frequency rank).

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

Source: FrequencyWords open word-frequency list