sluggishness

noun

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

The verdict

“sluggishness” is uncommon English (frequency #80,897 among 54,294 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#80,897
frequency rank, English
54,294
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The property of being sluggish, unable or unwilling to act quickly.

Key facts for sluggishness
PropertyValue
Headwordsluggishness
LanguageEnglish
Part of speechNoun
Letters12
Frequency rank#80,897
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “sluggishness” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). sluggishness lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

sluggishness is uncommon English at frequency #80,897 among 54,294 “S” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for sluggishness, a sign its spelling follows regular English conventions. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

Etymologically, the entry records: From sluggish + -ness. The correct English form is sluggishness, spelled S-L-U-G-G-I-S-H-N-E-S-S.

Definition

  1. 1
    The property of being sluggish, unable or unwilling to act quickly.
  2. 2
    The state of economic decline, inactivity, slow or subnormal growth.

Etymology

From sluggish + -ness.

Antonyms

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "sluggishness"?
"sluggishness" is spelled S-L-U-G-G-I-S-H-N-E-S-S.
What does "sluggishness" mean?
As a noun, "sluggishness" means: The property of being sluggish, unable or unwilling to act quickly.
What is the origin of the word "sluggishness"?
From sluggish + -ness. 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 “sluggishness”

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

  • The one correct English spelling is S-L-U-G-G-I-S-H-N-E-S-S - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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