interregional
"interregional" is a 13-letter English headword indexed on PlainSpell.
The verdict
“interregional” is uncommon English (frequency #89,488 among 17,902 “I” headwords), classed as an adjective. The kind of spelling people second-guess.
- #89,488
- frequency rank, English
- 17,902
- “I” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of, pertaining to, or connecting two or more regions.
| Property | Value |
|---|---|
| Headword | interregional |
| Language | English |
| Part of speech | Adjective |
| Letters | 13 |
| Frequency rank | #89,488 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “interregional” sits in English frequency
Rare enough to double-check
interregional is uncommon English at frequency #89,488 among 17,902 “I” headwords, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Of, pertaining to, or connecting two or more regions.".
interregional has no tracked misspelling variants, 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 inter- + region + -al. The correct English form is interregional, spelled I-N-T-E-R-R-E-G-I-O-N-A-L.
Definition
- 1Of, pertaining to, or connecting two or more regions.
Etymology
From inter- + region + -al.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “interregional”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is I-N-T-E-R-R-E-G-I-O-N-A-L - every other letter order is a misspelling in standard orthography.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
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.