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acorn

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

Letters

5 characters

Language

English

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Source

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Detailed reference entry for the English word "acorn", 5-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 "acorn" 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 "acorn" for academic writing, checking homophone confusion, or exploring etymological origins, this page provides a citation-backed, free reference that requires no sign-up.

acorn is aEnglishnoun. It means: The fruit of the oak, being an oval nut growing in a woody cup or cupule. Pronounced /ˈeɪ.kɔɹn/. Often confused with ARN and acre.

Key facts for acorn
PropertyValue
Headwordacorn
LanguageEnglish
Part of speechNoun
IPA/ˈeɪ.kɔɹn/
Letters5
Frequency rank#25,989
Misspellings tracked7
Confusable pairs20
SourceWiktionary (kaikki.org)

Frequency rank visualization

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

Source: Wordfreq corpus

Spelling & Dictionary Insight

The English entry for acorn is 5 letters long, classified as anoun, and transcribed in the International Phonetic Alphabet as /ˈeɪ.kɔɹn/. Corpus data places it at rank #25,989 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it.Wiktionary records 5 distinct senses for this headword, so context determines which meaning a reader should apply.

Our Hunspell-derived misspelling index lists 7 documented wrong-spelling variants for acorn, with forms such as "accorn", "aconr", and "acornn". Each variant represents a distinct typo pattern that appears often enough in corpora to be worth flagging, typically a doubled-consonant error, a silent-letter drop, or a vowel substitution.It also participates in 20 confusable-pair relationships, "ARN", "acre", "Avon", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English acorn, an alteration (after corn) of earlier *akern, from Old English æcern (“acorn, oak-mast”), from Proto-West Germanic *akarn, from Proto-Germanic *akraną (“fruit; acorn, nut”), from Proto-Indo-European *h₂égrō (“berry”). Cognates Cog… 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 acorn, spelled A-C-O-R-N, and any other sequence of those letters, regardless of how natural it feels, is a misspelling in standard orthography.

Definition

  1. 1
    The fruit of the oak, being an oval nut growing in a woody cup or cupule.
  2. 2
    A cone-shaped piece of wood on the point of the spindle above the vane, on the mast-head.
  3. 3
    See acorn-shell.
  4. 4
    The glans penis.
  5. 5
    A testicle.

Etymology

From Middle English acorn, an alteration (after corn) of earlier *akern, from Old English æcern (“acorn, oak-mast”), from Proto-West Germanic *akarn, from Proto-Germanic *akraną (“fruit; acorn, nut”), from Proto-Indo-European *h₂égrō (“berry”). Cognates Cognate with Scots aicorn (“acorn”), Dutch aker (“acorn”), German Ecker (“acorn”), Danish agern (“acorn”), Faroese and Icelandic akarn (“acorn”), Norwegian Nynorsk åkorn (“acorn”), Gothic 𐌰𐌺𐍂𐌰𐌽 (akran, “fruit”); Irish airne (“sloe”), Welsh aeron (“berries; small fruits”), eirin (“plums”), Latgalian ūga (“berry”), Latvian oga (“berry”), Lithuanian uoga (“berry”), Belarusian я́гада (jáhada, “berry”), Bulgarian, Russian, and Ukrainian я́года (jáhoda, “berry”), Czech and Slovak jahoda (“strawberry”), Macedonian ја́года (jágoda, “strawberry”), Polish and Slovene jagoda (“berry”), Serbo-Croatian ја̏года, jȁgoda (“strawberry”), Tocharian A and Tocharian B oko (“fruit”). Not related to Old English āc (“oak”), corn (“corn, seed”) or Middle English acquerne.

This word in other languages

Common misspellings

Also misspelled as: accorn,aconr,acornn,acorrn,acron,aocrn,caorn

Misspelling Pattern Breakdown

Relative frequency of common misspelling types for acorn

Misspelling Variants of "acorn"

accorn6aconr5acornn6acorrn6acron5aocrn5caorn5
Misspelling Variants of "acorn"

Frequency rank: #25,989 in English

Frequently Asked Questions

How do you spell "acorn"?
"acorn" is spelled A-C-O-R-N. The IPA pronunciation is /ˈeɪ.kɔɹn/.
What does "acorn" mean?
As a noun, "acorn" means: The fruit of the oak, being an oval nut growing in a woody cup or cupule.
What words are commonly confused with "acorn"?
"acorn" is commonly confused with "ARN", "acre", "Avon". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "acorn"?
The IPA (International Phonetic Alphabet) transcription for "acorn" is /ˈeɪ.kɔɹn/. 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 "acorn"?
From Middle English acorn, an alteration (after corn) of earlier *akern, from Old English æcern (“acorn, oak-mast”), from Proto-West Germanic *akarn, from Proto-Germanic *akraną (“fruit; acorn, nut”), from Proto-Indo-European *h₂égrō (“berry”). Co... 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 A in our English index:

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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.