MMO
/ˌɛm.ɛmˈəʊ/
"mmo" is a 3-letter English headword indexed on PlainSpell.
The verdict
“MMO” sits in 20 confusable pairs (corpus #36,672) as a noun. The look-alike neighbours are the real trap.
- #36,672
- frequency rank, English
- 4,057
- “M” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of massively multiplayer online game.
Corpus desk
Index EN-mmo · MMO · English
MMO · rank #36,672 · 0 variants · 20 confusables
- FREQ-MID #36,672
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 4,057
- PHOTO-FINISH mistletoe
Nearest frequency peer: mistletoe (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Frequency neighbours of confusable “MMO”
Peers at similar corpus weight, separate from look-alike pairs below
- midlife
midlife
63,333 corpus weight
- mired
mired
63,332 corpus weight
- Missoula
Missoula
63,331 corpus weight
- mistletoe
mistletoe
63,330 corpus weight
- MMO
MMO
63,329 corpus weight
- modality
modality
63,327 corpus weight
What this shows Bars place “MMO” against nearest ranked English headwords, not a reprint of the confusable-pair desk.
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 | MMO |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌɛm.ɛmˈəʊ/ |
| Letters | 3 |
| Frequency rank | #36,672 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “MMO”
Easy to mix with look-alikes
The spelling risk for MMO is neighbouring look-alikes ("my", "Mr", …), not just typos; it is anoun pronounced /ˌɛm.ɛmˈəʊ/. Frequency #36,672 among 4,057 “M” headwords. 3 recorded senses keep meaning in play.
No misspelling variants are generated for MMO in our index, suggesting the orthography follows predictable English patterns. It also participates in 20 confusable-pair relationships, "my", "Mr", "MS", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
This entry carries no recorded etymology, so spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct English form is MMO, spelled M-M-O.
Definition
- 1Initialism of massively multiplayer online game.
- 2Maximum operating Mach number; the Mach number which an aircraft should not exceed in the course of routine operation.
- 3Initialism of methane monooxygenase, see Methane monooxygenase.
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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Similar English words by spelling shape
Same letter count and similar misspelling depth for "MMO", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).