tardigrade

/ˈtɑɹdɪˌɡɹeɪd/

//ˈtɑɹdɪˌɡɹeɪd// adj

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

The verdict

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

Unranked
below top-frequency English
10
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Sluggish; moving slowly.

Corpus desk

Index EN-tardigrade · tardigrade · English

tardigrade · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "T" 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 tardigrade
PropertyValue
Headwordtardigrade
LanguageEnglish
Part of speechAdjective
IPA/ˈtɑɹdɪˌɡɹeɪd/
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “tardigrade” in English

tardigraderanks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

tardigrade is uncommon English outside the top frequency list, classed as anadjective, transcribed /ˈtɑɹdɪˌɡɹeɪd/. Rarity is why readers land here mid-draft. Gloss: "Sluggish; moving slowly.".

Our edit-distance generator produced no likely misspellings for tardigrade, typically a sign the spelling maps closely to how the word sounds. This entry stands alone in our confusable dataset, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From Latin tardigradus (“slowly stepping”), from tardus (“slow”) + gradior (“step, walk”). The correct English form is tardigrade, spelled T-A-R-D-I-G-R-A-D-E.

Definition

  1. 1
    Sluggish; moving slowly.

Recorded use

Wiktionary examples

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

  1. Each tendril ending in a perfect claw, / Obeys the whole routine of Nature's law; / Transforms each sinus to a sylvan shade, / Though p'rhaps its force is rather tardigrade.
  2. He ran on into the piazza, but he quickly heard the tramp of feet behind him, for the other two prisoners had been released, and the soldiers were struggling and fighting their way after them, in such tardigrade fashion as their hoof-shaped shoes would allow—impeded, but not very resolutely attacked, by the people.

Etymology

From Latin tardigradus (“slowly stepping”), from tardus (“slow”) + gradior (“step, walk”).

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 "tardigrade"?
"tardigrade" is spelled T-A-R-D-I-G-R-A-D-E. The IPA pronunciation is /ˈtɑɹdɪˌɡɹeɪd/.
What does "tardigrade" mean?
As an adjective, "tardigrade" means: Sluggish; moving slowly.
How do you pronounce "tardigrade"?
The IPA (International Phonetic Alphabet) transcription for "tardigrade" is /ˈtɑɹdɪˌɡɹeɪd/. 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 "tardigrade"?
From Latin tardigradus (“slowly stepping”), from tardus (“slow”) + gradior (“step, walk”). 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.

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

Source: FrequencyWords open word-frequency list