blackjack

/ˈblækd͡ʒæk/

//ˈblækd͡ʒæk// noun

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

The verdict

“blackjack” is a moderately-common English word, ranked #23,475 in English word frequency and used as a noun.

#23,475
frequency rank, English
9
letters
15
tracked misspellings
2
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A common gambling card game in casinos, where the object is to get as close to 21 without going over.

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)

Where “blackjack” 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). blackjack lands here:

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

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

Spelling & Dictionary Insight

The English entry for blackjack is 9 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ˈblækd͡ʒæk/. Corpus data places it at rank #23,475 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 11 distinct senses for this headword, so context determines which meaning a reader should apply.

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.

Etymology

From black + jack.

This word in other languages

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.

Using “blackjack”

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

  • The one correct English spelling is B-L-A-C-K-J-A-C-K - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈblækd͡ʒæk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Don't mix it up with “backpack” - see the side-by-side comparison. blackjack vs backpack
  • 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