incastellate

verb

"incastellate" is a 12-letter English headword indexed on PlainSpell.

The verdict

“incastellate” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.

Unranked
below top-frequency English
12
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To make into a castle.

Corpus desk

Index EN-incastellate · incastellate · English

incastellate · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-5 5 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.

Key facts for incastellate
PropertyValue
Headwordincastellate
LanguageEnglish
Part of speechVerb
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “incastellate” in English

incastellatefalls outside the top-100,000 ranked English words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

incastellate is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. 2 senses are on record.

No misspelling variants are generated for incastellate in our index, typically a sign the spelling maps closely to how the word sounds. No confusable counterpart is on file for this word, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: First attested in 1552; borrowed from Medieval Latin incastellātus, perfect passive participle of incastellō (“to fortify, incastle, incastellate”) from in- (“in-: make into”) + castellum (“little fortification, castle; cistern”). Cognate with Italian incas… The correct English form is incastellate, spelled I-N-C-A-S-T-E-L-L-A-T-E.

Definition

  1. 1
    To make into a castle.
  2. 2
    To enclose a well or cistern with masonry.

Recorded use

Wiktionary example

These source excerpts show how incastellate appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Sir William Estfild, knight of the Bath, Mayor, 1438. a great benefactor to that church, vnder a fayre monument, hee also builded steeple, changed their old Bels into 5. tunable bels, and gaue one hundred poundes to other workes of that church. Moreouer hee caused the Conduit in Aldermanbury which he had begun, to be performed at his charges and water to…

Etymology

First attested in 1552; borrowed from Medieval Latin incastellātus, perfect passive participle of incastellō (“to fortify, incastle, incastellate”) from in- (“in-: make into”) + castellum (“little fortification, castle; cistern”). Cognate with Italian incastellare.

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

How do you spell "incastellate"?
"incastellate" is spelled I-N-C-A-S-T-E-L-L-A-T-E.
What does "incastellate" mean?
As a verb, "incastellate" means: To make into a castle.
What is the origin of the word "incastellate"?
First attested in 1552; borrowed from Medieval Latin incastellātus, perfect passive participle of incastellō (“to fortify, incastle, incastellate”) from in- (“in-: make into”) + castellum (“little fortification, castle; cistern”). Cognate with Ita... See the full etymology section above for more details.
Is PlainSpell free to use?
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Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list