mouth
Pluralmouths
Pluralmouths
Formsmouths, mouthing, mouthed
- 1The opening in the face of a person or animal through which food is taken in and sounds come out, and the space behind it that holds the tongue and teeth.
Don't talk with your mouth full.
She opened her mouth to say something, then changed her mind.
Note
In anatomy it is the front end of the digestive tract, where many animals break food down with teeth before swallowing. The same word stretches to a river's outlet and to any opening at all.
Checked 2 Nov 2026 · 2 facts
- The mouth is the beginning of the digestive tract. en.wikipedia.org
- Many animals break down food with their teeth before swallowing. en.wikipedia.org
- 2The end of a river where its water flows out into a sea, lake, or larger river.
The ferry crosses the wide mouth of the estuary twice a day.
Sediment builds up at the river's mouth, forming a broad delta.
UsageMostly the mouth of the river or the river's mouth; places are often located at the mouth of a river.
Similaroutlet
Oppositesource
Note
Rivers and tributaries both have one, at the point where their water passes into something larger. John Ross, writing in The Scottish Geographical Magazine in 1895, puts the town of Antung at the mouth of the Yalu. The verb to empty at a mouth is built on this meaning.
Checked 2 Nov 2026 · 5 facts
- A river or tributary has its mouth where it flows into a larger body of water. en.wikipedia.org
- John Ross wrote the cited article in The Scottish Geographical Magazine. archive.org
- The cited magazine article was published in 1895. archive.org
- Ross's passage places Antung at the mouth of the Yalu. archive.org
- The verb mouth is derived from the noun. en.wiktionary.org
- 3Speech or what a person says, especially their manner of speaking, as in word of mouth or a foul mouth.
that in the mouth of two or three witnesses every word may be established
1611, The Holy Bible, King James VersionUsageSurvives in set phrases such as watch your mouth and shoot your mouth off.
Note
An older use treats spoken words as evidence, as in the King James Bible of 1611: "in the mouth of two or three witnesses every word may be established." The construction is in the mouth of, meaning roughly "on the word of."
Checked 2 Nov 2026 · 3 facts
- The King James Bible was first published in 1611. wwwe.lib.cam.ac.uk
- The quotation appears verbatim in the King James Bible, at Matthew 18:16. en.wikisource.org
- The biblical construction refers to establishing something through witnesses' spoken testimony. en.wikisource.org
- 4An outlet, aperture, or other opening through which something passes.
Smoke poured from the mouth of the chimney.
He peered into the dark mouth of the tunnel.
UsageMostly the mouth of + noun, the mouth of the cave, or second in a compound: tunnel mouth.
Similaropening, entrance, aperture, outlet
Note
Any opening can have one, natural or built. Horace Walpole's The Castle of Otranto (1764) sets it at a cavern, Margery Allingham's The China Governess (1963) at the entrance to a London street, and Tim Dunn, writing in Rail in 2020, at a tunnel.
Checked 2 Nov 2026 · 6 facts
- Horace Walpole wrote The Castle of Otranto, first published in 1764. Its first-edition title page was dated 1765, but it appeared in December 1764. en.wikisource.org
- The Castle of Otranto uses 'mouth' for a cavern's opening. gutenberg.org
- Margery Allingham wrote The China Governess, first published in 1963. en.wikipedia.org
- The China Governess uses 'mouth' for the entrance to a London street. en.wiktionary.org
- Tim Dunn wrote an article in Rail in 2020. rchs.org.uk
- Dunn's article uses the compound 'tunnel mouth'. en.wiktionary.org
- 5To move the lips or shape words or air with the mouth, with or without sound.
Some singers mouth the words along with a recording instead of singing live.
Unable to shout over the loud music, he mouthed 'Let's go' and nodded toward the exit.
Note
The broadest of the verb's uses, and one that can stand without an object. Infants mouth, and Peter H. Wolff (1987) describes mouthing and tonguing movements that are hard to tell apart from smiling. With an object, it shapes air or words, as in James Hogg's "mere air mouthed into a sound." The result may or may not make a sound.
Checked 31 Oct 2026 · 4 facts
- Infants make mouthing movements. pmc.ncbi.nlm.nih.gov
- Peter H. Wolff's referenced book was published in 1987. press.uchicago.edu
- Wolff describes mouthing and tonguing movements that can be difficult to distinguish from smiling. en.wiktionary.org
- The quoted wording appears in James Hogg's writing. gutenberg.org
Less common meanings
- 6Someone viewed simply as another person needing food, especially a family member who depends on others.
Her small paycheck had to stretch to one more mouth after her nephew moved in.
The farmer wondered how he would feed so many hungry mouths through a long winter.
UsageMostly with feed: another mouth to feed, hungry mouths, often with worry about money.
- 7
- 8To say something, especially in a pompous, insincere, or empty way.
He mouthed empty platitudes throughout the entire meeting.
Critics mouth the same tired complaints year after year.
UsageOften with hollow words as the object: mouth platitudes. Mouthed the words can also mean silently, so add aloud if needed.
Similarspout, parrot, recite, utter
Note
Spoken aloud this time, often with a hint that the words are hollow or borrowed, as in "mouthing big phrases" in the Hare brothers' Guesses at Truth.
Checked 2 Nov 2026 · 2 facts
- The phrase "mouthing big phrases" occurs in Guesses at Truth. en.wiktionary.org
- Guesses at Truth was written jointly by the brothers Augustus William Hare and Julius Hare. en.wikisource.org
- 9To take, hold, carry, or work something with the mouth or teeth, usually without swallowing it.
The toddler mouthed the wooden block but never tried to chew or swallow it.
Horses sometimes mouth the bit before they settle down.
Note
Handling that stops short of eating: "The fish mouthed the lure, but didn't bite." Writers on animals often add over or all over, as when Francis Guillemard (1886) describes a creature that played with a fish and mouthed it all over before it vanished. The same mouthed over can also mean eating in earnest, so a word like bite or swallow nearby usually settles which is meant.
Checked 31 Oct 2026 · 2 facts
- The Guillemard work containing this passage was first published in 1886. archive.org
- Francis Guillemard describes an animal playing with and mouthing a fish before the fish disappears. archive.org
- 10A person who talks too much, especially loudly, boastfully, or by spreading gossip.
Don't sit next to Greg on the bus; he's a mouth who never stops talking.
He's a real mouth, drowning out everyone else at the dinner table.
Similarchatterbox, windbag, gossip, loudmouth, blabbermouth
Note
Slang that turns the body part into the whole person, often with real in front: my kid sister is a real mouth. The complaint may be about volume and nonstop talk, or about someone who cannot keep a secret and passes gossip on.
Checked 3 Nov 2026 · 1 fact
- The slang sense uses the name of a body part to refer to a whole person. en.wiktionary.org
- 11Of a river or stream, to empty out at its mouth into a larger body of water.
The river mouths into the Atlantic near the harbor town.
Tributaries that mouth into the main channel swell it after heavy rain.
Similarempty, flow, drain, discharge
Note
A verb that is usually followed by into or out. The Philosophical Magazine of 1906 describes hanging valleys that "mouthed into" larger valleys. T. Walter Middleton's Qualla uses mouthed out for an avalanche of stones that poured from a ravine onto a road. Water is the core case, but anything that funnels out of a channel can do it. The noun behind the verb is the river's outlet.
Checked 31 Oct 2026 · 3 facts
- The Philosophical Magazine contains the hanging-valley example with "mouthed into", dated 1906. Wiktionary reproduces and attributes the passage. en.wiktionary.org
- T. Walter Middleton uses "mouthed out" for stones descending a ravine onto a road. Wiktionary attributes this passage to Qualla, page 39. en.wiktionary.org
- The verb derives from the noun mouth; the river-outlet sense explains this use. en.wiktionary.org
- 12The crosspiece of a bridle bit that goes into the animal's mouth.
After trying several bits, the rider settled on one with a thick, smooth mouth that her nervous gelding accepted without fuss.
Riders often choose a smooth mouth to be kinder on a sensitive horse.
- 13To form a mouth or opening in something.
The front collar must be mouthed out as shown, to take the second cone on the mandrel.
1882, Paul Nooncree Hasluck, The Metal Turner's HandbookThe cutting edge of a shaving cutter should be mouthed out slightly with a fine oilstone.
1956, Mechanical World and Engineering Record - Volume 136Note
A workshop verb that almost always comes with out. In Paul N. Hasluck's The Metal Turner's Handybook, a collar "must be mouthed out" so that a cone on the mandrel can fit into it. The result is an opening flared or widened at its rim. The word belongs to lathe and machine-shop instructions rather than everyday talk.
Checked 31 Oct 2026 · 2 facts
- Paul N. Hasluck wrote The Metal Turner's Handybook. A contemporary publisher's catalogue lists it under his name. gutenberg.org
- The quoted instruction concerns opening out a collar to accommodate a cone on the mandrel, supporting the explanation of a widened rim. en.wiktionary.org
- 14To shape or cleanse something with the mouth, the way a bear licks her cub.
Before egg-laying begins, the spawning grounds are mouthed over (cleaned) by both sexes.
1965, The Aquarist and Pondkeeper - Volumes 30-31Meanwhile she, and the male, mouthed over the inner surface of pot until it was as clean as could be.
1937, Aquarium Journal - Volume 10, Issue 5Similarlick
Note
Fishkeepers' writing is where this verb is most at home. A pair of fish mouths over a stone, a pot or a plant stem, working along it until it is clean, often to prepare a place to spawn. The Aquarist and Pondkeeper (1965) even explains it in passing: "mouthed over (cleaned)." Outside the aquarium it describes a mother licking her newborns clean.
Checked 31 Oct 2026 · 2 facts
- Fish clean surfaces with their mouths, including pots and plant stems, sometimes before spawning. en.wiktionary.org
- The Aquarist and Pondkeeper contains the quoted gloss. en.wiktionary.org
- 15To examine the teeth of an animal, especially a sheep, to judge its age.
Experienced graziers mouth ewes before sale to estimate their age.
He mouthed each lamb carefully, noting which teeth had come through.
Note
A sheep farmer's check on age and fitness. Older ewes are "mouthed out" to see whether their teeth are good for another year, because the eruption and wear of the teeth follow a predictable course. The phrasal mouth out matches the spelling of the machinist's verb but has nothing to do with it. A cautious buyer, one 1977 Agriculture Decisions report notes, would not buy sheep "without mouthing them."
Checked 31 Oct 2026 · 2 facts
- Older ewes are examined to determine whether their teeth remain serviceable for another year. extension.sdstate.edu
- Tooth eruption and subsequent wear provide evidence of a sheep's age. extension.sdstate.edu
- 16A twisted or distorted expression of the face; a grimace.
Counterfeit sad looks, / Make mouths upon me when I turn my back.
c. 1595, William Shakespeare, “A Midsommer Nights Dreame”Note
A grimace that lived mostly inside one phrase. In Shakespeare's A Midsummer Night's Dream, mockers "make mouths upon me when I turn my back": the noun sits in make mouths, plural, much as we now say pull faces. Mow is its old partner word for the same expression. The verb to make mouths at grew out of this idiom.
Checked 31 Oct 2026 · 2 facts
- The quotation occurs in William Shakespeare's A Midsummer Night's Dream, with mouths as a plural noun in make mouths. Helena speaks the line, addressing those she believes are mocking her. gutenberg.org
- Mow is an old word meaning a grimace or wry face. en.wiktionary.org
- 17A person who speaks on behalf of others, voicing the common opinion; a spokesperson.
Every coffeehouse has some particular statesman belonging to it, who is the mouth of the street where he lives.
1712, [Joseph Addison; Richard Steele et al.], “THURSDAY, June 12, 1712”Note
An obsolete way of naming a spokesman, built as the mouth of a group. The Spectator in 1712 gives every coffeehouse a statesman "who is the mouth of the street where he lives." Today mouthpiece or spokesperson does this work. A modern listener would hear a mouth as the loud talker, so this meaning belongs to reading older prose, not to writing new sentences.
Checked 31 Oct 2026 · 3 facts
- Mouth had an obsolete sense meaning a principal speaker or someone voicing the common opinion. en.wiktionary.org
- The Spectator passage appeared in 1712, in number 403, dated June 12. gutenberg.org
- The Spectator describes each coffeehouse's statesman using the quoted words. gutenberg.org
- 18To make grimaces or insulting faces at someone in mockery.
And that other face -- that awful, gibbering, mouthing face she drew away.
1873, May Agnes Fleming, A Wonderful WomanThe man mouthed at the bars. He was half-mad, I think, in that one minute.
1906, Bernard Edward Joseph Capes, At a Winter's FireNote
The verb form of an old insult, now obsolete. It takes at: Benjamin Disraeli's Vivian Grey (1827) has a man who "mouthed at his companions even while he bowed to them." The participle also works as an adjective, as in Thomas Hood's "mouthing face" (1826). For the noun idiom it comes from, see the old word for a grimace.
Checked 31 Oct 2026 · 6 facts
- Benjamin Disraeli wrote Vivian Grey. gutenberg.org
- Publication began in 1826 and continued in 1827; date the complete novel 1826–27. en.wikipedia.org
- The novel describes a man using the exact quoted wording, including mouth at. gutenberg.org
- Thomas Hood used mouthing adjectivally in the phrase mouthing face. gutenberg.org
- The Irish Schoolmaster appeared in Whims and Oddities in 1826; 1854 is a collected-edition date. en.wiktionary.org
- An older noun sense of mouth means a grimace. en.wiktionary.org
Showing meanings only.
Practice
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Origin
From Middle English mouth, from Old English mūþ, from Proto-Germanic *munþaz ("mouth"), probably from Proto-Indo-European *ment- ("to chew; jaw, mouth"), though the details are disputed. It is related to Dutch mond, German Mund, and Swedish mun, and to Latin mentum ("chin"). The verb comes from the noun.
Checked 1 Nov 2026 · 6 facts
- English mouth descends through Middle English mouth and Old English mūþ from Proto-Germanic *munþaz. en.wiktionary.org
- Proto-Germanic *munþaz meant mouth. en.wiktionary.org
- Mouth is related to Dutch mond and German Mund. en.wiktionary.org
- Mouth is related to Swedish mun. en.wiktionary.org
- Mouth is related to Latin mentum, meaning chin. en.wiktionary.org
- The verb mouth derives from the noun. en.wiktionary.org