slack off

verb

"slack-off" is a 8-letter English headword indexed on PlainSpell.

The verdict

“slack off” is uncommon English (outside the top frequency list), classed as a verb. The kind of spelling people second-guess.

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - To be deliberately unproductive in one's work or study.

Corpus desk

Index EN-slack-off · slack off · English

slack off · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-2 2 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 slack off
PropertyValue
Headwordslack off
LanguageEnglish
Part of speechVerb
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “slack off” in English

slack offfalls 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.

Rare enough to double-check

slack off is uncommon English outside the top frequency list, classed as averb. Rarity is why readers land here mid-draft. 2 senses are on record.

Our edit-distance generator produced no likely misspellings for slack off, a straightforward case of a spelling with little room for common typos. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.

This entry carries no recorded etymology, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct English form is slack off, spelled S-L-A-C-K- -O-F-F.

Definition

  1. 1
    To be deliberately unproductive in one's work or study.
  2. 2
    To decrease in intensity; to ease off; to diminish; to die down.

Recorded use

Wiktionary examples

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

  1. Emily is slacking off since this is her last semester; she completely stopped trying to make good grades.
  2. Thankfully the hail slacked off after a few minutes.

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "slack off"?
"slack off" is spelled S-L-A-C-K- -O-F-F.
What does "slack off" mean?
As a verb, "slack off" means: To be deliberately unproductive in one's work or study.
What language does "slack off" come from?
"slack off" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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