diagonal mark
"diagonal-mark" is a 12-letter English headword indexed on PlainSpell.
The verdict
“diagonal mark” 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) - Synonym of slash as the forward slash ⟨/⟩ and sometimes also its proscribed sense inclusive of the backslash ⟨\⟩.
| Property | Value |
|---|---|
| Headword | diagonal mark |
| Language | English |
| Part of speech | Noun |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “diagonal mark” sits in English frequency
Spelling & Dictionary Insight
The English entry for diagonal mark 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: "Synonym of slash as the forward slash ⟨/⟩ and sometimes also its proscribed sense inclusive of the backslash ⟨\⟩.".
diagonal mark doesn't appear in our generated misspelling index, typically a sign the spelling maps closely to how the word sounds. It is not paired with a close-neighbour confusable in our dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.
Etymologically, the entry records: To distinguish the intended sense of diagonal. The correct English form is diagonal mark, spelled D-I-A-G-O-N-A-L- -M-A-R-K.
Definition
- 1Synonym of slash as the forward slash ⟨/⟩ and sometimes also its proscribed sense inclusive of the backslash ⟨\⟩.
Etymology
To distinguish the intended sense of diagonal.
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 “diagonal mark”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-I-A-G-O-N-A-L- -M-A-R-K - 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.