arch

/ɑɹt͡ʃ/

//ɑɹt͡ʃ// noun

By · According to Wiktionary data (CC BY-SA) ·

"arch" is a 4-letter English headword indexed on PlainSpell.

The verdict

“arch” is a regularly-used English word, ranked #6,865 in English word frequency and used as a noun.

#6,865
frequency rank, English
4
letters
6
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - An inverted U shape.

Visual similarity to commonly confused words

How many letter changes separate each confused pair (Levenshtein distance, normalized).

arch vs are
50% similar
arch vs art
50% similar
arch vs arm
50% similar

Source: PlainSpell confusable corpus (Wiktionary, CC BY-SA).

Key facts for arch
PropertyValue
Headwordarch
LanguageEnglish
Part of speechNoun
IPA/ɑɹt͡ʃ/
Letters4
Frequency rank#6,865
Misspellings tracked6
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “arch” 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). arch 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 arch is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /ɑɹt͡ʃ/. Corpus data places it at rank #6,865 in overall English word frequency, indicating it appears regularly in written and spoken text. Wiktionary records 7 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 6 likely wrong-spelling variants for arch, with forms such as "acrh", "arcch", and "archh". 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 20 confusable-pair relationships, "are", "art", "arm", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.

Etymologically, the entry records: Etymology tree Proto-Indo-European *h₂erkʷ- Proto-Indo-European *h₂erkʷos Proto-Italic *arkuos Latin arcus Old French arc Old French archebor. Middle English arch English arch From Middle English arch, arche, from Old French arche (“an arch”), a feminine fo… The correct English form is arch, spelled A-R-C-H.

Definition

  1. 1
    An inverted U shape.
  2. 2
    An arch-shaped arrangement of trapezoidal stones, designed to redistribute downward force outward.
  3. 3
    An architectural element having the shape of an arch
  4. 4
    Any place covered by an arch; an archway.
  5. 5
    An arc; a part of a curve.
  6. 6
    A natural arch-shaped opening in a rock mass.
  7. 7
    The curved part of the bottom of a foot.

Etymology

Etymology tree Proto-Indo-European *h₂erkʷ- Proto-Indo-European *h₂erkʷos Proto-Italic *arkuos Latin arcus Old French arc Old French archebor. Middle English arch English arch From Middle English arch, arche, from Old French arche (“an arch”), a feminine form of arc, from Latin arcus (“a bow, arc, arch”). Doublet of arc and arco. Displaced native Old English bīeġels.

This word in other languages

arco(Español)arc(Français)Bogen(Deutsch)arco(Português)

Common misspellings

Also misspelled as: acrh,arcch,archh,arhc,arrch,rach

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of arch - measured in single-character edits (insert, delete, or substitute a letter). Larger bars are easier to catch; one-edit slips are the sneakiest.

acrh2arcch1archh1arhc2arrch1rach2
Edit distance from "arch"

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 "arch"?
"arch" is spelled A-R-C-H. The IPA pronunciation is /ɑɹt͡ʃ/.
What does "arch" mean?
As a noun, "arch" means: An inverted U shape.
What words are commonly confused with "arch"?
"arch" is commonly confused with "are", "art", "arm". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "arch"?
The IPA (International Phonetic Alphabet) transcription for "arch" is /ɑɹt͡ʃ/. 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 "arch"?
Etymology tree Proto-Indo-European *h₂erkʷ- Proto-Indo-European *h₂erkʷos Proto-Italic *arkuos Latin arcus Old French arc Old French archebor. Middle English arch English arch From Middle English arch, arche, from Old French arche (“an arch”), a f... 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 “arch”

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

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