blackjack

/ˈblækd͡ʒæk/

//ˈblækd͡ʒæk// noun

By · According to Wiktionary data (CC BY-SA) ·

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

The verdict

“blackjack” has 15 generated spelling variants in the English index at frequency #23,475. The variants make it a useful spelling check.

#23,475
frequency rank, English
4,121
“B” headwords
15
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A common gambling card game in casinos, where the object is to get as close to 21 without going over.

Corpus desk

Index EN-blackjack · blackjack · English

blackjack · rank #23,475 · 15 variants · 2 confusables

  • FREQ-MID #23,475
  • LEN-LONG 9 letters
  • VOW-2 2 vowels
  • CONFUS-LOW 2 pairs
  • VAR-HIGH 15 variants
  • BOOK-MID 4,121
  • PHOTO-FINISH biotech

Nearest frequency peer: biotech (-1 rank slots)

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.

Rank peers near misspelling magnet “blackjack”

Same rarity band: useful when a typo lands on a peer headword

corpus weight

What this shows “blackjack” sits among these FrequencyWords peers; misspelling depth is tracked separately in the edit-distance chart.

Source FrequencyWords open word-frequency list As of September 3, 2026

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

blackjack vs backpack
78% similar
blackjack vs blackface
78% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for blackjack
PropertyValue
Headwordblackjack
LanguageEnglish
Part of speechNoun
IPA/ˈblækd͡ʒæk/
Letters9
Frequency rank#23,475
Misspellings tracked15
Confusable pairs2
SourceWiktionary (kaikki.org)

Frequency seat of misspelling magnet “blackjack”

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

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

The axis is logarithmic, with each marked tick roughly ten times rarer than the last. Same rarity band neighbours include “biotech” (#23,474), “bloodstream” (#23,476), “Bigfoot” (#23,473). Among 4,121 “B” headwords, “blackjack” is #23,475. Source: FrequencyWords open word-frequency list.

A misspelling magnet

The generator records 15 spelling variants around blackjack (IPA /ˈblækd͡ʒæk/), anoun. Corpus frequency is #23,475 among 4,121 “B” headwords. Wiktionary lists 11 senses, so context still picks the gloss.

Our generated misspelling index lists 15 likely wrong-spelling variants for blackjack, with forms such as "balckjack", "bblackjack", and "blacckjack". Each variant is a distinct typo pattern an edit-distance generator flags, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution. It also participates in 2 confusable-pair relationships, "backpack", "blackface", where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From black + jack. The correct English form is blackjack, spelled B-L-A-C-K-J-A-C-K.

Definition

  1. 1
    A common gambling card game in casinos, where the object is to get as close to 21 without going over.
  2. 2
    A hand in the game of blackjack consisting of a face card and an ace.
  3. 3
    A variant of switch where each player is initially dealt the same number of cards, usually seven, and when one player plays a black jack the player whose turn comes next has to pick up that many cards, unless they play a red jack (as this normally cancels a black jack).
  4. 4
    A variant of hearts where the Jack of Spades is the penalty card.
  5. 5
    The flag (i.e., a jack) traditionally flown by pirate ships; popularly thought to be a white skull and crossed bones on a black field (the Jolly Roger).
  6. 6
    A small, flat, blunt, usually leather-covered weapon loaded with heavy material such as lead or ball bearings, intended to inflict a blow to the head that renders the victim unconscious with diminished risk of lasting cranial trauma.
  7. 7
    A tool of leather filled with shot (or similar), resembling the weapon, used for shaping sheet metal.
  8. 8
    Any of several species of weed of genus Bidens, such as Bidens pilosa, in the family Compositae.
  9. 9
    Ellipsis of blackjack oak.
  10. 10
    Any of a series of hard, dark soils, often considered low quality, but suitable for growing certain crops such as cotton.
  11. 11
    Ammonium bituminosulfonate.

Recorded use

Wiktionary examples

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

  1. The pain is sometimes like the dull, heavy thud of being hit with a lead-filled blackjack; other times like a wizard is reaching deep below the skin and ripping muscles, tendons, and nerves.
  2. A little creek ran through the land, and the prairie rolled a little there, too. Nothing but blackjacks for miles around it, but on that section, because of the water, I suppose, there were elms and persimmons and cottonwoods and even a grove of pecans.

Etymology

From black + jack.

This word in other languages

veintiuna(Español)vingt-et-un(Français)Blackjack(Deutsch)

Common misspellings

Also misspelled as:

  • balckjack
  • bblackjack
  • blacckjack
  • blacjkack
  • blackajck
  • blackjacck
  • blackjackk
  • blackjakc
  • blackjcak
  • blackjjack
  • blackkjack
  • blakcjack
  • blcakjack
  • bllackjack
  • lbackjack

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of blackjack - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

balckjack2bblackjack1blacckjack1blacjkack2blackajck2blackjacck1blackjackk1blackjakc2
Edit distance from "blackjack"

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 "blackjack"?
"blackjack" is spelled B-L-A-C-K-J-A-C-K. The IPA pronunciation is /ˈblækd͡ʒæk/.
What does "blackjack" mean?
As a noun, "blackjack" means: A common gambling card game in casinos, where the object is to get as close to 21 without going over.
What words are commonly confused with "blackjack"?
"blackjack" is commonly confused with "backpack", "blackface". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "blackjack"?
The IPA (International Phonetic Alphabet) transcription for "blackjack" is /ˈblækd͡ʒæk/. 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 "blackjack"?
From black + jack. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "blackjack", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 9 letters (nearest by frequency rank).

bluegrass#23,477budgetary#23,482autopilot#23,466attrition#23,463

Similar misspelling depth

Headwords with a similar count of attested misspellings (15 here; floor ≥5).

astronomer15 variantscumbersome15 variantsgreenfield15 variantsGreensboro15 variants

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

Source: FrequencyWords open word-frequency list