MOOC
/muːk/
"mooc" is a 4-letter English headword indexed on PlainSpell.
The verdict
“MOOC” is uncommon English (frequency #58,866 among 4,057 “M” headwords), classed as a noun. The kind of spelling people second-guess.
- #58,866
- frequency rank, English
- 4,057
- “M” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Acronym of massive open online course; a course designed for a very large enrollment, offered on the World Wide Web by an educational institution and typically free of charge.
Corpus desk
Index EN-mooc · MOOC · English
MOOC · rank #58,866 · 0 variants · 0 confusables
- FREQ-RARE #58,866
- LEN-MID 4 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-MID 4,057
- PHOTO-FINISH Monongahela
Nearest frequency peer: Monongahela (-2 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.
Long-tail ranks near “MOOC”
Sparse band: bars invert rank so rarer forms read shorter
- Molson
Molson
41,140 corpus weight
- moneyed
moneyed
41,138 corpus weight
- Monongahela
Monongahela
41,137 corpus weight
- MOOC
MOOC
41,135 corpus weight
- motorhome
motorhome
41,133 corpus weight
- Murcia
Murcia
41,131 corpus weight
What this shows Long-tail view: where “MOOC” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | MOOC |
| Language | English |
| Part of speech | Noun |
| IPA | /muːk/ |
| Letters | 4 |
| Frequency rank | #58,866 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “MOOC” in English
Rare enough to double-check
MOOC is uncommon English at frequency #58,866 among 4,057 “M” headwords, classed as anoun, transcribed /muːk/. Rarity is why readers land here mid-draft. Gloss: "Acronym of massive open online course; a course designed for a very large enrollment, offered on the World Wide Web by an educational institution and typically free of charge.".
We couldn't generate a plausible misspelling set for MOOC, and the word's spelling is regular enough that our generator found nothing worth flagging. Our dataset records no confusable match here, since its spelling is unusual enough that it doesn't cluster with a lookalike.
No documented word history exists for this headword, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct English form is MOOC, spelled M-O-O-C.
Definition
- 1Acronym of massive open online course; a course designed for a very large enrollment, offered on the World Wide Web by an educational institution and typically free of charge.
Recorded use
Wiktionary examplesThese source excerpts show how MOOC appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
In some ways, how learning and sharing works in a MOOC is more akin to a social network than to a traditional classroom.
Besides the Artificial Intelligence course, Stanford offered two other MOOCs last semester — Machine Learning (104,000 registered, and 13,000 completed the course), and Introduction to Databases (92,000 registered, 7,000 completed).
This word in other languages
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 "MOOC", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 4 letters (nearest by frequency rank).