swiftness
/ˈswɪftnɪs/
"swiftness" is a 9-letter English headword indexed on PlainSpell.
The verdict
“swiftness” is uncommon English (frequency #60,503 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.
- #60,503
- frequency rank, English
- 54,294
- “S” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The state of being swift.
| Property | Value |
|---|---|
| Headword | swiftness |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈswɪftnɪs/ |
| Letters | 9 |
| Frequency rank | #60,503 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “swiftness” sits in English frequency
Rare enough to double-check
swiftness is uncommon English at frequency #60,503 among 54,294 “S” headwords, classed as anoun, transcribed /ˈswɪftnɪs/. Rarity is why readers land here mid-draft. Gloss: "The state of being swift.".
We couldn't generate a plausible misspelling set for swiftness, typically a sign the spelling maps closely to how the word sounds. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Etymologically, the entry records: From Middle English swiftnesse, swyftnesse, from Old English swiftnes (“swiftness”), equivalent to swift + -ness. The correct English form is swiftness, spelled S-W-I-F-T-N-E-S-S.
Definition
- 1The state of being swift.
Etymology
From Middle English swiftnesse, swyftnesse, from Old English swiftnes (“swiftness”), equivalent to swift + -ness.
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
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Using “swiftness”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is S-W-I-F-T-N-E-S-S - every other letter order is a misspelling in standard orthography.
- Say it as /ˈswɪftnɪs/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.