sluggishly

adv

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

The verdict

“sluggishly” is uncommon English (outside the top frequency list), classed as an adverb. 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) - In a sluggish manner; responding or moving slowly.

Corpus desk

Index EN-sluggishly · sluggishly · English

sluggishly · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 10 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "S" 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 sluggishly
PropertyValue
Headwordsluggishly
LanguageEnglish
Part of speechAdverb
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “sluggishly” in English

sluggishlysits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

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

Rare enough to double-check

sluggishly is uncommon English outside the top frequency list, classed as anadverb. Rarity is why readers land here mid-draft. Gloss: "In a sluggish manner; responding or moving slowly.".

sluggishly doesn't appear in our generated misspelling index, and the word's spelling is regular enough that our generator found nothing worth flagging. 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 + -ly. The correct English form is sluggishly, spelled S-L-U-G-G-I-S-H-L-Y.

Definition

  1. 1
    In a sluggish manner; responding or moving slowly.

Recorded use

Wiktionary examples

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

  1. It hung together in banks, flowing sluggishly down the slope of the land and driving reluctantly before the wind[.]
  2. "Their survival to this day tells us Mars' mantle has evolved sluggishly over billions of years," Charalambous said. "On Earth, features like these may well have been largely erased."

Etymology

From sluggish + -ly.

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 "sluggishly"?
"sluggishly" is spelled S-L-U-G-G-I-S-H-L-Y.
What does "sluggishly" mean?
As an adverb, "sluggishly" means: In a sluggish manner; responding or moving slowly.
What is the origin of the word "sluggishly"?
From sluggish + -ly. 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