tentaculum

noun

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

The verdict

“tentaculum” is outside the top-ranked English vocabulary, used as a 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) - A tentacle.

Key facts for tentaculum
PropertyValue
Headwordtentaculum
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “tentaculum” sits in English frequency

tentaculum 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 tentaculum is 10 letters long, classified as a noun. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.

The misspelling generator found no plausible variants for tentaculum, since its letter pattern doesn't lend itself to common typo substitutions. 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 New Latin tentāculum. See the doublet tentacle. The correct English form is tentaculum, spelled T-E-N-T-A-C-U-L-U-M.

Definition

  1. 1
    A tentacle.
  2. 2
    A feeler or whisker.

Etymology

From New Latin tentāculum. See the doublet tentacle.

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 "tentaculum"?
"tentaculum" is spelled T-E-N-T-A-C-U-L-U-M.
What does "tentaculum" mean?
As a noun, "tentaculum" means: A tentacle.
What is the origin of the word "tentaculum"?
From New Latin tentāculum. See the doublet tentacle. 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 “tentaculum”

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

  • The one correct English spelling is T-E-N-T-A-C-U-L-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