XVIIIth
"xviiith" is a 7-letter English headword indexed on PlainSpell.
The verdict
“XVIIIth” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 7
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of eighteenth; 18th.
Corpus desk
Index EN-xviiith · XVIIIth · English
XVIIIth · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 7 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "X" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | XVIIIth |
| Language | English |
| Part of speech | Adjective |
| Letters | 7 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “XVIIIth” in English
Rare enough to double-check
XVIIIth is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Abbreviation of eighteenth; 18th.".
No misspelling variants are generated for XVIIIth in our index, which points to an orthography that plays by predictable English rules. No confusable counterpart is on file for this word, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From XVIII (Roman numeral representing eighteen) + -th (ordinal suffix). The correct English form is XVIIIth, spelled X-V-I-I-I-T-H.
Definition
- 1Abbreviation of eighteenth; 18th.
Recorded use
Wiktionary examplesThese source excerpts show how XVIIIth appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
PICTURES / of / GERMAN LIFE / In the XVIIIᵗʰ and XIXᵗʰ Centuries.
The prince goes to the chief of Naharaina, a land probably unknown to the Egyptians until the Asiatic conquests of the XVIIIth Dynasty had led them to the upper waters of the Euphrates.
Etymology
From XVIII (Roman numeral representing eighteen) + -th (ordinal suffix).
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.