sinfulness

noun

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

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

The verdict

“sinfulness” is uncommon English (frequency #83,753 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#83,753
frequency rank, English
54,294
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The property of being sinful.

Key facts for sinfulness
PropertyValue
Headwordsinfulness
LanguageEnglish
Part of speechNoun
Letters10
Frequency rank#83,753
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “sinfulness” sits in English frequency

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

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

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

sinfulness is uncommon English at frequency #83,753 among 54,294 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

sinfulness doesn't appear in our generated misspelling index, a sign its spelling follows regular English conventions. Our confusable-pair dataset has no match for it, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Etymologically, the entry records: From Middle English synfulnes, synfulnesse, synnefulnysse, equivalent to sinful + -ness. Compare Old English synniġness (“sinfulness”). The correct English form is sinfulness, spelled S-I-N-F-U-L-N-E-S-S.

Definition

  1. 1
    The property of being sinful.
  2. 2
    The result or product of being sinful.

Etymology

From Middle English synfulnes, synfulnesse, synnefulnysse, equivalent to sinful + -ness. Compare Old English synniġness (“sinfulness”).

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 "sinfulness"?
"sinfulness" is spelled S-I-N-F-U-L-N-E-S-S.
What does "sinfulness" mean?
As a noun, "sinfulness" means: The property of being sinful.
What is the origin of the word "sinfulness"?
From Middle English synfulnes, synfulnesse, synnefulnysse, equivalent to sinful + -ness. Compare Old English synniġness (“sinfulness”). 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.

Using “sinfulness”

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

  • The one correct English spelling is S-I-N-F-U-L-N-E-S-S - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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