IIIIth
"iiiith" is a 6-letter English headword indexed on PlainSpell.
The verdict
“IIIIth” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 6
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Abbreviation of fourth.
Corpus desk
Index EN-iiiith · IIIIth · English
IIIIth · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 6 letters
- VOW-4 4 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "I" 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 | IIIIth |
| Language | English |
| Part of speech | Adjective |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “IIIIth” in English
Rare enough to double-check
IIIIth is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "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.
Recorded use
Wiktionary examplesThese source excerpts show how IIIIth appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
One of the Daughters of King Edward the IIIIth,[…]iiiith Part of the Moiety of the Chaſe of Clerys,[…]
Thys yere, þe IIIIᵗʰ or Vᵗʰ of Novembre, was a gret wynde þat blew down many howsis in þe contrey / & tylis, & thecche, & trees.
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.