smooth-brained
"smooth-brained" is a 13-letter English headword indexed on PlainSpell.
The verdict
“smooth-brained” is outside the top-ranked English vocabulary, used as an adjective - the kind of word writers most often double-check.
- Unranked
- below top-frequency English
- 14
- letters
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Having a brain which is naturally smooth in appearance.
| Property | Value |
|---|---|
| Headword | smooth-brained |
| Language | English |
| Part of speech | Adjective |
| Letters | 14 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “smooth-brained” sits in English frequency
Spelling & Dictionary Insight
The English entry for smooth-brained is 14 letters long, classified as an adjective. It sits outside the most-frequent rank tiers, which is often why uncommon words generate more spelling variants per reader. Wiktionary records 3 distinct senses for this headword, so context determines which meaning a reader should apply.
Zero misspellings are on record for smooth-brained in our index, a sign its spelling follows regular English conventions. This headword has no recorded confusable partner, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.
Our source data has no etymology on file for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct English form is smooth-brained, spelled S-M-O-O-T-H---B-R-A-I-N-E-D.
Definition
- 1Having a brain which is naturally smooth in appearance.
- 2Lissencephalic; having a brain which lacks convolutions due to malformation.
- 3Stupid, foolish; ignorant.
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “smooth-brained”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is S-M-O-O-T-H---B-R-A-I-N-E-D - 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.