castellum
"castellum" is a 9-letter English headword indexed on PlainSpell.
The verdict
“castellum” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A small Roman detached fort or fortlet used as a watch tower or signal station.
Corpus desk
Index EN-castellum · castellum · English
castellum · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 9 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "C" 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 | castellum |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “castellum” in English
Rare enough to double-check
castellum is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "A small Roman detached fort or fortlet used as a watch tower or signal station.".
We couldn't generate a plausible misspelling set for castellum, suggesting the orthography follows predictable English patterns. We don't track a confusable pairing for this entry, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: Learned borrowing from Latin castellum. Doublet of cashel, castell, castle, and château. The correct English form is castellum, spelled C-A-S-T-E-L-L-U-M.
Definition
- 1A small Roman detached fort or fortlet used as a watch tower or signal station.
Etymology
Learned borrowing from Latin castellum. Doublet of cashel, castell, castle, and château.
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.