birthtongue

noun

"birthtongue" is a 11-letter English headword indexed on PlainSpell.

The verdict

“birthtongue” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.

Unranked
below top-frequency English
11
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - One's first language, learnt in early childhood; native language.

Corpus desk

Index EN-birthtongue · birthtongue · English

birthtongue · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 11 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "B" thin
  • PHOTO-UNK Peer pending

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.

Key facts for birthtongue
PropertyValue
Headwordbirthtongue
LanguageEnglish
Part of speechNoun
Letters11
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “birthtongue” in English

birthtonguesits beyond the 100,000 most-frequent English words, in the long tail of technical, archaic, or otherwise rare vocabulary where spelling doubt tends to strike hardest.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

birthtongue is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. Gloss: "One's first language, learnt in early childhood; native language.".

birthtongue doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. Our confusable-pair dataset has no match for it, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From Middle English burþe tonge, equivalent to birth + tongue. The correct English form is birthtongue, spelled B-I-R-T-H-T-O-N-G-U-E.

Definition

  1. 1
    One's first language, learnt in early childhood; native language.

Recorded use

Wiktionary examples

These source excerpts show how birthtongue appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. In replying timidly, Anita revealed her foreign accent, which was instantly observed. “You are American, of course? No? English? Ah, how stupid I am!" Forthwith he began to talk fluently in German, though Anita saw it was not his birthtongue.
  2. And now I place them, palms up, wrong five-legged beasts with their underbellies exposed, on the desk for you who have told me, in your own broken wedding of English and your birthtongue, […]

Etymology

From Middle English burþe tonge, equivalent to birth + tongue.

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

How do you spell "birthtongue"?
"birthtongue" is spelled B-I-R-T-H-T-O-N-G-U-E.
What does "birthtongue" mean?
As a noun, "birthtongue" means: One's first language, learnt in early childhood; native language.
What is the origin of the word "birthtongue"?
From Middle English burþe tonge, equivalent to birth + tongue. 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.

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

Source: FrequencyWords open word-frequency list