number sign
"number-sign" is a 10-letter English headword indexed on PlainSpell.
The verdict
“number sign” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 11
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The character # used to represent the word number.
| Property | Value |
|---|---|
| Headword | number sign |
| Language | English |
| Part of speech | Noun |
| Letters | 11 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “number sign” sits in English frequency
Rare enough to double-check
number sign is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The character # used to represent the word number.".
Our edit-distance generator produced no likely misspellings for number sign, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.
This entry's etymology isn't recorded, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is number sign, spelled N-U-M-B-E-R- -S-I-G-N.
Definition
- 1The character # used to represent the word number.
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
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Using “number sign”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is N-U-M-B-E-R- -S-I-G-N - 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.