interdepartmental
"interdepartmental" is a 17-letter English headword indexed on PlainSpell.
The verdict
“interdepartmental” is uncommon English (frequency #77,802 among 2,140 “I” headwords), classed as an adjective. The kind of spelling people second-guess.
- #77,802
- frequency rank, English
- 2,140
- “I” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Between departments; to do with the connection of departments.
Corpus desk
Index EN-interdepartmental · interdepartmental · English
interdepartmental · rank #77,802 · 0 variants · 0 confusables
- FREQ-RARE #77,802
- LEN-MEGA 17 letters
- VOW-6 6 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 2,140
- PHOTO-FINISH interdimensio…
Nearest frequency peer: interdimensional (+1 rank slots)
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.
Long-tail ranks near “interdepartmental”
Sparse band: bars invert rank so rarer forms read shorter
- ingroup
ingroup
22,203 corpus weight
- inimical
inimical
22,202 corpus weight
- interdepart…
interdepartmental
22,199 corpus weight
- interdimens…
interdimensional
22,198 corpus weight
- interposed
interposed
22,197 corpus weight
- iridescence
iridescence
22,195 corpus weight
What this shows Long-tail view: where “interdepartmental” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | interdepartmental |
| Language | English |
| Part of speech | Adjective |
| Letters | 17 |
| Frequency rank | #77,802 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “interdepartmental” in English
Rare enough to double-check
interdepartmental is uncommon English at frequency #77,802 among 2,140 “I” headwords, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.
The misspelling generator found no plausible variants for interdepartmental, since its letter pattern doesn't lend itself to common typo substitutions. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: From inter- + department + -al. The correct English form is interdepartmental, spelled I-N-T-E-R-D-E-P-A-R-T-M-E-N-T-A-L.
Definition
- 1Between departments; to do with the connection of departments.
- 2Involving multiple departments; multidepartmental.
Recorded use
Wiktionary examplesThese source excerpts show how interdepartmental appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
I sent the memo to the accounting department via interdepartmental mail.
The memo discussed a new interdepartmental project that would require resources from nearly every group.
Etymology
From inter- + department + -al.
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
How do you spell "interdepartmental"?
What does "interdepartmental" mean?
What is the origin of the word "interdepartmental"?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "interdepartmental", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 17 letters (nearest by frequency rank).