jack squat

noun

"jack-squat" is a 9-letter English headword indexed on PlainSpell.

The verdict

“jack squat” 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) - Synonym of jack shit.

Key facts for jack squat
PropertyValue
Headwordjack squat
LanguageEnglish
Part of speechNoun
Letters10
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “jack squat” sits in English frequency

jack squat 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 jack squat 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. The dominant gloss from Wiktionary reads: "Synonym of jack shit.".

jack squat doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. 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: Related to both jack shit and squat as in diddly-squat; apparently a blend of them. Attested since the 1970s; especially widely popularized by a Saturday Night Live sketch of 1993, "Matt Foley: A Scary Story on Halloween." The correct English form is jack squat, spelled J-A-C-K- -S-Q-U-A-T.

Definition

  1. 1
    Synonym of jack shit.

Etymology

Related to both jack shit and squat as in diddly-squat; apparently a blend of them. Attested since the 1970s; especially widely popularized by a Saturday Night Live sketch of 1993, "Matt Foley: A Scary Story on Halloween."

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 "jack squat"?
"jack squat" is spelled J-A-C-K- -S-Q-U-A-T.
What does "jack squat" mean?
As a noun, "jack squat" means: Synonym of jack shit.
What is the origin of the word "jack squat"?
Related to both jack shit and squat as in diddly-squat; apparently a blend of them. Attested since the 1970s; especially widely popularized by a Saturday Night Live sketch of 1993, "Matt Foley: A Scary Story on Halloween." 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 “jack squat”

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

  • The one correct English spelling is J-A-C-K- -S-Q-U-A-T - 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