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by

Definition, pronunciation, etymology, and usage for the English word. Free spelling reference powered by Wiktionary.

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By · Reviewed against Wiktionary & Hunspell sources ·

Letters

2 characters

Language

English

word origin

Source

Wiktionary

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Detailed reference entry for the English word "by", 2-letters, with pronunciation in International Phonetic Alphabet notation, etymology traced through Germanic and Romance roots where applicable, common misspelling variants catalogued from Hunspell error dictionaries, and usage frequency ranked against the top 100,000 English words in the Wordfreq corpus. PlainSpell covers English, Spanish, Portuguese, French, and German spelling with confusable-pair detection that highlights visually and phonetically similar words. This entry for "by" includes synonyms, antonyms, homophones, and cross-language translation pointers sourced from Wiktionary via the kaikki.org extract. Whether you are verifying the correct spelling of "by" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

by is aEnglishprep. It means: Near or next to. Pronounced /baɪ/. It ranks #24 in English word frequency. Often confused with bye and BYU.

Key facts for by
PropertyValue
Headwordby
LanguageEnglish
Part of speechPrep
IPA/baɪ/
Letters2
Frequency rank#24
Misspellings tracked0
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency rank visualization

Position of by in English word frequency (lower rank = more common)

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for by is 2 letters long, classified as aprep, and transcribed in the International Phonetic Alphabet as /baɪ/. Corpus data places it at rank #24 in overall English word frequency, putting it firmly in the everyday core of the language.Wiktionary records 21 distinct senses for this headword, so context determines which meaning a reader should apply.

No frequent misspelling variants are recorded for by in our index, suggesting the orthography either follows predictable English patterns or the word is uncommon enough that typo corpora lack signal.It also participates in 20 confusable-pair relationships, "bye", "BYU", "byte", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English by, bi, from Old English bī (“by; near; around”), from Proto-West Germanic *bī, from Proto-Germanic *bi (“near; by; around; about”), from Proto-Indo-European *h₁epi. Cognate with West Frisian by (“by; near”), Afrikaans by (“at; by; near”… Root origin matters for spelling because borrowed morphemes (Greek, Latin, Old French, Old English) carry their source-language orthographic conventions into modern English, which is why historical etymology is often the cleanest predictor of whether a cluster like "-ough", "-eau", or "-tion" will appear. For readers arriving here from a spelling check, the authoritative guidance is: the correct English form is by, spelled B-Y, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    Near or next to.
  2. 2
    From one side of something to the other, passing close by; past.
  3. 3
    Not later than (the given time); not later than the end of (the given time interval).
  4. 4
    Indicates the person or thing that does or causes something: Through the action or presence of.
  5. 5
    Indicates the person or thing that does or causes something: Through the action or presence of.
  6. 6
    Indicates the person or thing that does or causes something: Through the action or presence of.
  7. 7
    Indicates the creator of a work: Existing through the authorship etc. of.
  8. 8
    Indicates a means of achieving something: Involving/using the means of.
  9. 9
    Indicates an authority according to which something is done.
  10. 10
    Indicates an authority according to which something is done.
  11. 11
    Indicates a means of classification or organisation.
  12. 12
    Indicates the amount of change, difference or discrepancy
  13. 13
    In the formulae X by X and by Xs, indicates a steady progression, one X after another.
  14. 14
    [with the] Acted on in units of the specified size or measure. (Sometimes hyperbolically)
  15. 15
    Per; with or in proportion to each.
  16. 16
    Indicates a referenced source: According to.
  17. 17
    Used to separate dimensions when describing the size of something.
  18. 18
    multiplied by or (chiefly South Asia) divided by
  19. 19
    Designates a horse's sire (“male parent”).
  20. 20
    At; with; among.
  21. 21
    in a windward direction, sailing near to the direction from which the wind is blowing

Etymology

From Middle English by, bi, from Old English bī (“by; near; around”), from Proto-West Germanic *bī, from Proto-Germanic *bi (“near; by; around; about”), from Proto-Indo-European *h₁epi. Cognate with West Frisian by (“by; near”), Afrikaans by (“at; by; near”), Saterland Frisian bie (“near; by”), Dutch bij (“near; by”), German Low German bi (“by; near; at”), German bei (“by; near; at”).

This word in other languages

Spanish(Español)Portuguese(Português)French(Français)German(Deutsch)

Frequency rank: #24 in English

Frequently Asked Questions

How do you spell "by"?
"by" is spelled B-Y. The IPA pronunciation is /baɪ/.
What does "by" mean?
As a prep, "by" means: Near or next to.
What words are commonly confused with "by"?
"by" is commonly confused with "bye", "BYU", "byte". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "by"?
The IPA (International Phonetic Alphabet) transcription for "by" is /baɪ/. 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"?
From Middle English by, bi, from Old English bī (“by; near; around”), from Proto-West Germanic *bī, from Proto-Germanic *bi (“near; by; around; about”), from Proto-Indo-European *h₁epi. Cognate with West Frisian by (“by; near”), Afrikaans by (“at;... 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.

Nearby English words

Other entries that begin with the letter B in our English index:

All "B" wordsABCDEFGHIJKL

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Data Source: Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Frequency data from Wordfreq. Misspellings derived from Hunspell dictionaries.