English Word Reference Free

castle

Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.

Letters

6 characters

Language

English

word origin

Source

Wiktionary

open dictionary

Access

Free

no sign-up needed

Detailed reference entry for the English word "castle", 6-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "castle" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "castle" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

castle is aEnglishnoun. It means: A large residential building or compound that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king. Also, a house or mansion with some of the architectura... Pronounced /ˈkɑːsəl/. It ranks #3,282 in English word frequency. Often confused with cate and cattle.

Key facts for castle
PropertyValue
Headwordcastle
LanguageEnglish
Part of speechNoun
IPA/ˈkɑːsəl/
Letters6
Frequency rank#3,282
Misspellings tracked9
Confusable pairs17
SourceWiktionary (kaikki.org)

Frequency rank visualization

Position of castle in English word frequency (lower rank = more common)

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for castle is 6 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˈkɑːsəl/. Corpus data places it at rank #3,282 in overall English word frequency, indicating it appears regularly in written and spoken text.Wiktionary records 8 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 9 documented wrong-spelling variants for castle, with forms such as "acstle", "caslte", and "casstle". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It also participates in 17 confusable-pair relationships, "cate", "cattle", "costly", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English castle, castel, from late Old English castel, castell (“a town, village”), borrowed from Late Latin castellum (“small camp, fort”), diminutive of Latin castrum (“camp, fort, citadel, stronghold”). Doublet of cashel, castell, castellum, a… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is castle, spelled C-A-S-T-L-E, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    A large residential building or compound that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king. Also, a house or mansion with some of the architectural features of medieval castles.
  2. 2
    An instance of castling.
  3. 3
    A rook; a chess piece shaped like a castle tower.
  4. 4
    A defense structure in shogi formed by defensive pieces surrounding the king.
  5. 5
    A close helmet.
  6. 6
    Any strong, imposing, and stately palace or mansion.
  7. 7
    A small tower, as on a ship, or an elephant's back.
  8. 8
    The wicket.

Etymology

From Middle English castle, castel, from late Old English castel, castell (“a town, village”), borrowed from Late Latin castellum (“small camp, fort”), diminutive of Latin castrum (“camp, fort, citadel, stronghold”). Doublet of cashel, castell, castellum, and château. Parallel borrowings (from Late Latin or Old French) are Scots castel, castell (“castle”), West Frisian kastiel (“castle”), Dutch kasteel (“castle”), German Kastell (“castle”), Danish kastel (“citadel”), Swedish kastell (“citadel”), Icelandic kastali (“castle”), Welsh castell. The late Old English word was borrowed from biblical Latin castellum which has been translated as town or village. With the sense of castle, from Anglo-Norman/Old Northern French castel (“castle”), itself from Late Latin castellum (“small camp, fort”) (compare modern French château from Old French chastel). If Latin castrum (“camp, fort, citadel, stronghold”) is from Proto-Indo-European *kat- (“hut, shed”), Latin casa (“cottage, hut”) is related. Possibly related also to Gothic 𐌷𐌴𐌸𐌾𐍉 (hēþjō, “chamber”), Old English heaþor (“restraint, confinement, enclosure, prison”). See also casino, cassock.

Synonyms

This word in other languages

Common misspellings

Also misspelled as: acstle,caslte,casstle,castel,castlle,casttle,catsle,ccastle,csatle

Misspelling Pattern Breakdown

Relative frequency of common misspelling types for castle

Misspelling Variants of "castle"

acstle6caslte6casstle7castel6castlle7casttle7catsle6ccastle7
Misspelling Variants of "castle"

Frequency rank: #3,282 in English

Frequently Asked Questions

How do you spell "castle"?
"castle" is spelled C-A-S-T-L-E. The IPA pronunciation is /ˈkɑːsəl/.
What does "castle" mean?
As a noun, "castle" means: A large residential building or compound that is fortified and contains many defences; in previous ages often inhabited by a nobleman or king. Also, a house or mansion with some of the architectura...
What words are commonly confused with "castle"?
"castle" is commonly confused with "cate", "cattle", "costly". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "castle"?
The IPA (International Phonetic Alphabet) transcription for "castle" is /ˈkɑːsəl/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "castle"?
From Middle English castle, castel, from late Old English castel, castell (“a town, village”), borrowed from Late Latin castellum (“small camp, fort”), diminutive of Latin castrum (“camp, fort, citadel, stronghold”). Doublet of cashel, castell, ca... See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Nearby English words

Other entries that begin with the letter C in our English index:

Explore PlainSpell

Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Frequency data from Wordfreq. Misspellings derived from Hunspell dictionaries.