Mach
/mɑːk/
"mach" is a 4-letter English headword indexed on PlainSpell.
The verdict
“Mach” is a moderately-common English word, ranked #20,990 in English word frequency and used as a proper noun.
- #20,990
- frequency rank, English
- 4
- letters
- 6
- tracked misspellings
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A surname from Czech.
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 | Mach |
| Language | English |
| Part of speech | Proper noun |
| IPA | /mɑːk/ |
| Letters | 4 |
| Frequency rank | #20,990 |
| Misspellings tracked | 6 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Where “Mach” sits in English frequency
Spelling & Dictionary Insight
The English entry for Mach is 4 letters long, classified as a proper noun, and transcribed in the International Phonetic Alphabet as /mɑːk/. Corpus data places it at rank #20,990 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 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 Mach, with forms such as "amch", "macch", and "machh". Every one of these variants traces to a single-character edit -- an added or dropped letter, a swapped consonant, or a vowel swap -- the kind of slip a spell-checker is built to catch. It also participates in 20 confusable-pair relationships, "MC", "MH", "may", and more, a pairing that trips writers up because the two words share enough sound or shape to blur together.
Etymologically, the entry records: * As a Polish, Czech, Slovak, Ukrainian, and Lower Sorbian surname, from pet forms produced by truncation of personal names beginning with Ma- such as Matej, Martin, or Maciej, and the addition of the Slavic suffix -ch. * As a Jewish surname, from German Ma… The correct English form is Mach, spelled M-A-C-H.
Definition
- 1A surname from Czech.
- 2Ernst Mach, Austrian physicist (1838–1916), born in Moravia (now Czech Republic).
Etymology
* As a Polish, Czech, Slovak, Ukrainian, and Lower Sorbian surname, from pet forms produced by truncation of personal names beginning with Ma- such as Matej, Martin, or Maciej, and the addition of the Slavic suffix -ch. * As a Jewish surname, from German Mache (“work”). * Less commonly, a respelling of Hungarian Mács, a pet form of names corresponding to Matthew. * In some cases, from Vietnamese (Mạch, itself from the Chinese name 麥 /麦) or Cambodian, from Khmer ម៉ាច (maac).
Common misspellings
Also misspelled as: amch,macch,machh,mahc,mcah,mmach
Misspelling Pattern Breakdown
How far each generated variant is from the correct spelling of Mach - 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 “Mach”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is M-A-C-H - every other letter order is a misspelling in standard orthography.
- Say it as /mɑːk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Don't mix it up with “MC” - see the side-by-side comparison. Mach vs MC
- 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.