big mouth

noun

"big-mouth" is a 8-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information.

Corpus desk

Index EN-big-mouth · big mouth · English

big mouth · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-3 3 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 big mouth
PropertyValue
Headwordbig mouth
LanguageEnglish
Part of speechNoun
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “big mouth” in English

big mouthsits 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

big mouth is uncommon English outside the top frequency list, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.

No generated misspelling entries exist for big mouth in our index, and the word's spelling is regular enough that our generator found nothing worth flagging. This headword has no recorded confusable partner, which tends to mean the word is visually distinctive enough to stand on its own.

Wiktionary doesn't record an etymology for this headword, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is big mouth, spelled B-I-G- -M-O-U-T-H.

Definition

  1. 1
    The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information.
  2. 2
    A person who talks too much, especially by making exaggerated claims or by inappropriately revealing information.

Recorded use

Wiktionary examples

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

  1. Shut your big mouth or I'll shut it for you.
  2. Shut up, big mouth!

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). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "big mouth"?
"big mouth" is spelled B-I-G- -M-O-U-T-H.
What does "big mouth" mean?
As a noun, "big mouth" means: The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information.
What language does "big mouth" come from?
"big mouth" is a English word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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