Capitolium

name

"capitolium" is a 10-letter English headword indexed on PlainSpell.

The verdict

“Capitolium” is outside the top-ranked English vocabulary, used as a proper noun - the kind of word writers most often double-check.

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Synonym of Capitoline Hill.

Key facts for Capitolium
PropertyValue
HeadwordCapitolium
LanguageEnglish
Part of speechProper noun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “Capitolium” sits in English frequency

Capitolium falls 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.

Spelling & Dictionary Insight

The English entry for Capitolium is 10 letters long, classified as a proper noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. The dominant gloss from Wiktionary reads: "Synonym of Capitoline Hill.".

We couldn't generate a plausible misspelling set for Capitolium, a straightforward case of a spelling with little room for common typos. No close-neighbour confusable shows up for this headword in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Latin Capitōlium (“Capitoline Hill, its temples; similar citadels”), from the oblique stem of caput (“head”) + -ō (noun-forming suffix) or -ōlus (“-ole”, diminutive suffix) + -ium (suffix forming place names). Doublet of capitol and capitoul. The correct English form is Capitolium, spelled C-A-P-I-T-O-L-I-U-M.

Definition

  1. 1
    Synonym of Capitoline Hill.

Etymology

From Latin Capitōlium (“Capitoline Hill, its temples; similar citadels”), from the oblique stem of caput (“head”) + -ō (noun-forming suffix) or -ōlus (“-ole”, diminutive suffix) + -ium (suffix forming place names). Doublet of capitol and capitoul.

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 "Capitolium"?
"Capitolium" is spelled C-A-P-I-T-O-L-I-U-M.
What does "Capitolium" mean?
As a proper noun, "Capitolium" means: Synonym of Capitoline Hill.
What is the origin of the word "Capitolium"?
From Latin Capitōlium (“Capitoline Hill, its temples; similar citadels”), from the oblique stem of caput (“head”) + -ō (noun-forming suffix) or -ōlus (“-ole”, diminutive suffix) + -ium (suffix forming place names). Doublet of capitol and capitoul. 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.

Using “Capitolium”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is C-A-P-I-T-O-L-I-U-M - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words
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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list