MOOC
/muːk/
"mooc" is a 4-letter English headword indexed on PlainSpell.
The verdict
“MOOC” is an uncommon English word, ranked #58,866 in English word frequency and used as a noun.
- #58,866
- frequency rank, English
- 4
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 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.
| 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) |
Where “MOOC” sits in English frequency
Spelling & Dictionary Insight
The English entry for MOOC is 4 letters long, classified as a noun, and transcribed in the International Phonetic Alphabet as /muːk/. Corpus data places it at rank #58,866 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. The dominant gloss from Wiktionary reads: "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.
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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Using “MOOC”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is M-O-O-C - every other letter order is a misspelling in standard orthography.
- Say it as /muːk/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- 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.