unsufficiency
"unsufficiency" is a 13-letter English headword indexed on PlainSpell.
The verdict
“unsufficiency” 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
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Obsolete form of insufficiency.
| Property | Value |
|---|---|
| Headword | unsufficiency |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “unsufficiency” sits in English frequency
Spelling & Dictionary Insight
The English entry for unsufficiency is 13 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: "Obsolete form of insufficiency.".
No generated misspelling entries exist for unsufficiency in our index, a sign its spelling follows regular English conventions. Our confusable-pair dataset has no match for it, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From un- + sufficiency. The correct English form is unsufficiency, spelled U-N-S-U-F-F-I-C-I-E-N-C-Y.
Definition
- 1Obsolete form of insufficiency.
Etymology
From un- + sufficiency.
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
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Using “unsufficiency”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is U-N-S-U-F-F-I-C-I-E-N-C-Y - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
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.