IIIIth
"iiiith" is a 6-letter English headword indexed on PlainSpell.
The verdict
“IIIIth” is outside the top-ranked English vocabulary, used as an adjective - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 6
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Abbreviation of fourth.
| Property | Value |
|---|---|
| Headword | IIIIth |
| Language | English |
| Part of speech | Adjective |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “IIIIth” sits in English frequency
Spelling & Dictionary Insight
The English entry for IIIIth is 6 letters long, classified as an adjective. 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: "Abbreviation of fourth.".
We couldn't generate a plausible misspelling set for IIIIth, a sign its spelling follows regular English conventions. Our confusable-pair dataset has no match for it, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From Middle English IIIIth; IIII (Roman numeral representing four) + -th (ordinal suffix). The correct English form is IIIIth, spelled I-I-I-I-T-H.
Definition
- 1Abbreviation of fourth.
Etymology
From Middle English IIIIth; IIII (Roman numeral representing four) + -th (ordinal suffix).
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 “IIIIth”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-I-I-I-T-H - 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.