brainwave
"brainwave" is a 9-letter English headword indexed on PlainSpell.
The verdict
“brainwave” is an uncommon English word, ranked #66,521 in English word frequency and used as a noun.
- #66,521
- frequency rank, English
- 9
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Any of many rhythmic fluctuations of electric potential between parts of the brain, especially those seen on an electroencephalogram.
| Property | Value |
|---|---|
| Headword | brainwave |
| Language | English |
| Part of speech | Noun |
| Letters | 9 |
| Frequency rank | #66,521 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “brainwave” sits in English frequency
Spelling & Dictionary Insight
The English entry for brainwave is 9 letters long, classified as a noun. Corpus data places it at rank #66,521 in overall English word frequency, marking it as uncommon enough that many writers pause before typing it. Wiktionary records 2 distinct senses for this headword, so context determines which meaning a reader should apply.
The misspelling generator found no plausible variants for brainwave, since its letter sequence doesn't invite the usual edit-distance slips. This entry stands alone in our confusable dataset, a sign it's visually distinctive enough not to be mixed up with another word.
Etymologically, the entry records: From brain + wave. The correct English form is brainwave, spelled B-R-A-I-N-W-A-V-E.
Definition
- 1Any of many rhythmic fluctuations of electric potential between parts of the brain, especially those seen on an electroencephalogram.
- 2A sudden idea, understanding, or inspiration; a brainstorm.
Etymology
From brain + wave.
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.
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Using “brainwave”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is B-R-A-I-N-W-A-V-E - every other letter order is a misspelling in standard orthography.
- 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.