MSA
"msa" is a 3-letter English headword indexed on PlainSpell.
The verdict
“MSA” sits in 20 confusable pairs (corpus #31,662) as a noun. The look-alike neighbours are the real trap.
- #31,662
- frequency rank, English
- 4,057
- “M” headwords
- 20
- confusable pairs
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of motorway service area.
Corpus desk
Index EN-msa · MSA · English
MSA · rank #31,662 · 0 variants · 20 confusables
- FREQ-MID #31,662
- LEN-MID 3 letters
- VOW-1 1 vowel
- CONFUS-HIGH 20 pairs
- VAR-0 0 variants
- BOOK-MID 4,057
- PHOTO-FINISH moonshine
Nearest frequency peer: moonshine (-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 “MSA”
Peers at similar corpus weight, separate from look-alike pairs below
- modus
modus
68,342 corpus weight
- Monsignor
Monsignor
68,341 corpus weight
- moonshine
moonshine
68,340 corpus weight
- MSA
MSA
68,339 corpus weight
- MSI
MSI
68,338 corpus weight
- multitasking
multitasking
68,337 corpus weight
What this shows Bars place “MSA” 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 | MSA |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #31,662 |
| Misspellings tracked | 0 |
| Confusable pairs | 20 |
| Source | Wiktionary (kaikki.org) |
Corpus rank beside confusables of “MSA”
Easy to mix with look-alikes
The spelling risk for MSA is neighbouring look-alikes ("my", "MT", …), not just typos; it is anoun. Frequency #31,662 among 4,057 “M” headwords. 8 recorded senses keep meaning in play.
MSA has no tracked misspelling variants, and the word's spelling is regular enough that our generator found nothing worth flagging. It also participates in 20 confusable-pair relationships, "my", "MT", "mu", and more, since the words sound or look close enough that writers reach for the wrong one mid-sentence.
This entry's etymology isn't recorded, leaving phoneme-to-grapheme mapping as the best guide to its spelling rather than a borrowing history. The correct English form is MSA, spelled M-S-A.
Definition
- 1Initialism of motorway service area.
- 2Initialism of multiple system atrophy.
- 3Initialism of metropolitan statistical area.
- 4Initialism of master service agreement.
- 5Initialism of Master Settlement Agreement.
- 6Initialism of minimum safe altitude.
- 7Abbreviation of mechanically steered array.
- 8Initialism of mail submission agent.
Recorded use
Wiktionary exampleThese source excerpts show how MSA appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
A “mail submission agent” (MSA) that accepts outgoing mail from an MUA, grooms it, and submits it to the transport system[.]
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 "MSA", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).