main

/meɪn/

//meɪn// adj

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

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

The verdict

“main” is in the everyday core of English, ranked #574 in English word frequency and used as an adjective.

#574
frequency rank, English
4
letters
3
tracked misspellings
20
confusable pairs

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Of chief or leading importance; prime, principal.

Visual similarity to commonly confused words

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

main vs mi
50% similar
main vs MN
0% similar
main vs may
50% similar

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

Key facts for main
PropertyValue
Headwordmain
LanguageEnglish
Part of speechAdjective
IPA/meɪn/
Letters4
Frequency rank#574
Misspellings tracked3
Confusable pairs20
SourceWiktionary (kaikki.org)

Where “main” 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). main 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 main is 4 letters long, classified as an adjective, and transcribed in the International Phonetic Alphabet as /meɪn/. Corpus data places it at rank #574 in overall English word frequency, putting it firmly in the everyday core of the language. Wiktionary records 6 distinct senses for this headword, so context determines which meaning a reader should apply.

Our generated misspelling index lists 3 likely wrong-spelling variants for main, with forms such as "mainn", "mian", and "mmain". Each of these forms differs from the correct spelling by one small edit: a doubled letter, a dropped silent letter, or a substituted vowel. It also participates in 20 confusable-pair relationships, "mi", "MN", "may", and more, where similar look or sound leads writers to substitute one word for another in context.

Etymologically, the entry records: From Middle English mayn, main, maine, mæin, meyn, from main (noun) (see further at etymology 2); compare Old English mæġen (“strong, main, principal”) (used in combination) and Old Norse megn, megenn (“strong, main”). The word is cognate with Old High Germ… The correct English form is main, spelled M-A-I-N.

Definition

  1. 1
    Of chief or leading importance; prime, principal.
  2. 2
    Chief, most important, or principal in extent, size, or strength; consisting of the largest part.
  3. 3
    Full, sheer, undivided.
  4. 4
    Big; angry.
  5. 5
    Belonging to or connected with the principal mast in a vessel.
  6. 6
    Great in size or degree; important, powerful, strong, vast.

Etymology

From Middle English mayn, main, maine, mæin, meyn, from main (noun) (see further at etymology 2); compare Old English mæġen (“strong, main, principal”) (used in combination) and Old Norse megn, megenn (“strong, main”). The word is cognate with Old High German megīn (“strong, mighty”) (modern German Möge, Vermögen (“power, wealth”)), and also akin to Old English magan (“to be able to”). See also may.

This word in other languages

principal(Español)principal(Français)haupt-(Deutsch)principal(Português)

Common misspellings

Also misspelled as: mainn,mian,mmain

Misspelling Pattern Breakdown

How far each generated variant is from the correct spelling of main - expressed in single-character edits (insert, delete, or swap one letter). Bigger bars stand out at a glance; a one-edit slip is the hardest to catch.

mainn1mian2mmain1
Edit distance from "main"

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 "main"?
"main" is spelled M-A-I-N. The IPA pronunciation is /meɪn/.
What does "main" mean?
As an adjective, "main" means: Of chief or leading importance; prime, principal.
What words are commonly confused with "main"?
"main" is commonly confused with "mi", "MN", "may". These words look or sound similar but have different meanings. PlainSpell provides detailed comparisons for each pair.
How do you pronounce "main"?
The IPA (International Phonetic Alphabet) transcription for "main" is /meɪn/. 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 "main"?
From Middle English mayn, main, maine, mæin, meyn, from main (noun) (see further at etymology 2); compare Old English mæġen (“strong, main, principal”) (used in combination) and Old Norse megn, megenn (“strong, main”). The word is cognate with Old... 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 “main”

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

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