cardiac
/ˈkɑːdɪæk/
"cardiac" is a 7-letter English headword indexed on PlainSpell.
The verdict
“cardiac” is a regularly-used English word, ranked #9,022 in English word frequency and used as an adjective.
- #9,022
- frequency rank, English
- 7
- letters
- 10
- tracked misspellings
- 5
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Pertaining to the heart.
Visual similarity to commonly confused words
How many letter changes separate each confused pair (Levenshtein distance, normalized).
Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).
| Property | Value |
|---|---|
| Headword | cardiac |
| Language | English |
| Part of speech | Adjective |
| IPA | /ˈkɑːdɪæk/ |
| Letters | 7 |
| Frequency rank | #9,022 |
| Misspellings tracked | 10 |
| Confusable pairs | 5 |
| Source | Wiktionary (kaikki.org) |
Where “cardiac” sits in English frequency
Spelling & Dictionary Insight
The English entry for cardiac is 7 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /ˈkɑːdɪæk/. Corpus data places it at rank #9,022 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Our generated misspelling index lists 10 likely wrong-spelling variants for cardiac, with forms such as "acrdiac", "cadriac", and "cardaic". 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 5 confusable-pair relationships, "Cardiff", "cordial", "cardinal", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
Etymologically, the entry records: From Middle French cardiaque, from Latin cardiacus, from Ancient Greek καρδιακός (kardiakós, “relating to the heart”), from καρδία (kardía, “heart”); by surface analysis, cardi- + -ac. The correct English form is cardiac, spelled C-A-R-D-I-A-C.
Definition
- 1Pertaining to the heart.
- 2Pertaining to the cardia of the stomach; cardial (cardial is the usual adjective in this sense).
- 3Exciting action in the heart, through the medium of the stomach; cordial; stimulant.
Etymology
From Middle French cardiaque, from Latin cardiacus, from Ancient Greek καρδιακός (kardiakós, “relating to the heart”), from καρδία (kardía, “heart”); by surface analysis, cardi- + -ac.
Antonyms
This word in other languages
Common misspellings
Also misspelled as: acrdiac,cadriac,cardaic,carddiac,cardiacc,cardica,caridac,carrdiac,ccardiac,cradiac
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of cardiac - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.
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
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Using “cardiac”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is C-A-R-D-I-A-C - every other letter order is a misspelling in standard orthography.
- Say it as /ˈkɑːdɪæk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “Cardiff” - see the side-by-side comparison. cardiac vs Cardiff
- 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.