forebrain

noun

By · According to Wiktionary data (CC BY-SA) ·

"forebrain" is a 9-letter English headword indexed on PlainSpell.

The verdict

“forebrain” is uncommon English (frequency #82,308 among 18,613 “F” headwords), classed as a noun. The kind of spelling people second-guess.

#82,308
frequency rank, English
18,613
“F” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - The anterior part of the brain, including the cerebrum, thalamus, and hypothalamus.

Key facts for forebrain
PropertyValue
Headwordforebrain
LanguageEnglish
Part of speechNoun
Letters9
Frequency rank#82,308
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “forebrain” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). forebrain lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

forebrain is uncommon English at frequency #82,308 among 18,613 “F” headwords, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "The anterior part of the brain, including the cerebrum, thalamus, and hypothalamus.".

No misspelling variants are generated for forebrain in our index, suggesting the orthography follows predictable English patterns. No close-neighbour confusable shows up for this headword in our dataset, since no other headword is close enough in sound or shape to pair with it.

Etymologically, the entry records: From fore- + brain. The correct English form is forebrain, spelled F-O-R-E-B-R-A-I-N.

Definition

  1. 1
    The anterior part of the brain, including the cerebrum, thalamus, and hypothalamus.

Etymology

From fore- + brain.

This word in other languages

prosencéfalo(Español)prosencéphale(Français)Vorderhirn(Deutsch)

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

How do you spell "forebrain"?
"forebrain" is spelled F-O-R-E-B-R-A-I-N.
What does "forebrain" mean?
As a noun, "forebrain" means: The anterior part of the brain, including the cerebrum, thalamus, and hypothalamus.
What is the origin of the word "forebrain"?
From fore- + brain. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Using “forebrain”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is F-O-R-E-B-R-A-I-N - every other letter order is a misspelling in standard orthography.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

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.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list