by heart

/baɪ ˈhɑːt/

//baɪ ˈhɑːt// prep_phrase

"by-heart" is a 7-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
8
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - From unaided memory and in full detail.

Corpus desk

Index EN-by-heart · by heart · English

by heart · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 8 letters
  • VOW-3 3 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "B" 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 by heart
PropertyValue
Headwordby heart
LanguageEnglish
Part of speechPrep_phrase
IPA/baɪ ˈhɑːt/
Letters8
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “by heart” in English

by heartranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

by heart is uncommon English outside the top frequency list, classed as aprep_phrase, transcribed /baɪ ˈhɑːt/. Rarity is why readers land here mid-draft. Gloss: "From unaided memory and in full detail.".

Zero misspellings are on record for by heart in our index, since its letter pattern doesn't lend itself to common typo substitutions. We don't track a confusable pairing for this entry, which typically means the spelling is too distinctive to be mistaken for another word.

Etymologically, the entry records: From Middle English by herte. Compare French par cœur (literally “by heart”), of which the English may be a calque. The correct English form is by heart, spelled B-Y- -H-E-A-R-T.

Definition

  1. 1
    From unaided memory and in full detail.

Recorded use

Wiktionary examples

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

  1. to learn something by heart
  2. to know something by heart

Etymology

From Middle English by herte. Compare French par cœur (literally “by heart”), of which the English may be a calque.

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 "by heart"?
"by heart" is spelled B-Y- -H-E-A-R-T. The IPA pronunciation is /baɪ ˈhɑːt/.
What does "by heart" mean?
As a prep_phrase, "by heart" means: From unaided memory and in full detail.
How do you pronounce "by heart"?
The IPA (International Phonetic Alphabet) transcription for "by heart" is /baɪ ˈhɑːt/. 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 "by heart"?
From Middle English by herte. Compare French par cœur (literally “by heart”), of which the English may be a calque. 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.

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

Source: FrequencyWords open word-frequency list