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⇱ mouth - WordReference.com Dictionary of English

mouth

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UK:**UK and possibly other pronunciationsUK and possibly other pronunciations/ˈmaʊθ/US:USA pronunciation: IPA and respellingUSA pronunciation: IPA/n. maʊθ; v. maʊð/ ,USA pronunciation: respelling(n. mouth; v. mouᵺ)

Inflections of 'mouth' (n): npl: mouths

WordReference Random House Learner's Dictionary of American English © 2026
mouth /n. maʊθ; v. maʊð/USA pronunciation   n., pl. mouths /maʊðz/USA pronunciation , v. 
n. 
  1. Zoology the opening through which a person or animal takes in food:[countable]The baby closed his mouth and wouldn't eat.
  2. a person or animal who depends on someone for food or shelter:[countable]another mouth to feed.
  3. Anatomy the opening in the face thought of as the source of speaking:[countable]Secrets came tumbling out of his mouth.
  4. talk, esp. loud, empty, or boastful talk, or disrespectful talk or language:[uncountable]I won't take any more mouth from you!
  5. an opening leading out of or into a hole or a hollow thing:[countable]the mouth of the jar.
  6. Geography the lower end of a river or stream, where flowing water is discharged:[countable]at the mouth of the river.

v. 
  1. to say (something) without believing or understanding:[~ + object]mouthed the usual empty promises for reform.
  2. to form (a word, etc.) silently in one's mouth: [~ + object]He mouthed a few words at me, but I couldn't figure them out.[used with quotations]She mouthed "I can't'' at me from across the room.
  3. Slang Terms mouth off, [no object]
    • to talk disrespectfully to someone;
      sass.
    • to express one's opinions forcefully or without holding oneself back:He's always mouthing off at our meetings.
Idioms
  1. Idioms, Informal Terms down in or at the mouth, greatly saddened;
    dejected:In the last week of summer vacation she looked down in the mouth.


WordReference Random House Unabridged Dictionary of American English © 2026
mouth  (n. mouth;v. mouᵺ),USA pronunciation n., pl. mouths (mouᵺz),USA pronunciation 
n. 
  1. Anatomy
    • the opening through which an animal or human takes in food.
    • Dentistrythe cavity containing the structures used in mastication.
    • Dentistrythe structures enclosing or being within this cavity, considered as a whole.
  2. Anatomythe masticating and tasting apparatus.
  3. a person or animal dependent on someone for sustenance:another mouth to feed.
  4. Anatomythe oral opening or cavity considered as the source of vocal utterance.
  5. utterance or expression:to give mouth to one's thoughts.
  6. talk, esp. loud, empty, or boastful talk:That man is all mouth.
  7. disrespectful talk or language;
    back talk;
    impudence.
  8. a grimace made with the lips.
  9. an opening leading out of or into any cavity or hollow place or thing:the mouth of a cave; a bottle's mouth.
  10. Geographythe outfall at the lower end of a river or stream, where flowing water is discharged, as into a lake, sea, or ocean:the mouth of the Nile.
  11. the opening between the jaws of a vise or the like.
  12. Music and Dancethe lateral hole of an organ pipe.
  13. Music and Dancethe lateral blowhole of a flute.
  14. Idioms, Informal Termsdown in or at the mouth, [Informal.]dejected;
    depressed;
    disheartened:Ever since he lost his job, he has been looking very down in the mouth.
  15. Idioms, Informal Termsrun off at the mouth, [Informal.]to talk incessantly or indiscreetly.
  16. Idiomstalk out of both sides of one's mouth, to make contradictory or untruthful statements.

v.t. 
  1. to utter in a sonorous or pompous manner, or with excessive mouth movements:to mouth a speech.
  2. to form (a word, sound, etc.) with the lips without actually making an utterance:She silently mouthed her answer so as not to wake her napping child.
  3. to utter or pronounce softly and indistinctly;
    mumble:Stop mouthing your words and speak up.
  4. to put or take into the mouth, as food.
  5. to press, rub, or chew at with the mouth or lips:The dog mouthed the toys.
  6. to accustom (a horse) to the use of the bit and bridle.

v.i. 
  1. to speak sonorously and oratorically, or with excessive mouth movement.
  2. to grimace with the lips.
  3. Slang Termsmouth off:
    • to talk back;
      sass:He mouthed off to his mother.
    • to express one's opinions, objections, or the like in a forceful or uninhibited manner, esp. in public.
  • bef. 900; Middle English; Old English mūth; cognate with German Mund, Old Norse munnr
mouth′er, n. 
mouth′less, adj. 
    5. voice, speech.
Collins Concise English Dictionary © HarperCollins Publishers::
mouth n /maʊθ/ ( pl mouths /maʊðz/)
  1. the opening through which many animals take in food and issue vocal sounds
  2. the system of organs surrounding this opening, including the lips, tongue, teeth, etc
  3. the visible part of the lips on the face
  4. a particular manner of speaking: a foul mouth
  5. informal boastful, rude, or excessive talk: he is all mouth
  6. the point where a river issues into a sea or lake
  7. the opening of a container, such as a jar
  8. the opening of or place leading into a cave, tunnel, volcano, etc
  9. that part of the inner lip of a horse on which the bit acts, esp when specified as to sensitivity
  10. a pout; grimace
  11. down in the mouth, down at the mouth ⇒ in low spirits
 vb /maʊð/
  1. to speak or say (something) insincerely, esp in public
  2. (transitive) to form (words) with movements of the lips but without speaking
  3. (transitive) to take (something) into the mouth or to move (something) around inside the mouth
  4. (intransitive) usually followed by at: to make a grimace
Etymology: Old English mūth; compare Old Norse muthr, Gothic munths, Dutch mond
'mouth' also found in these entries (note: many are not synonyms or translations):
Collocations: has a [big, small, thin, round] mouth, mouthing [words, instructions, commands, threats] (to), mouth [ulcers, infection, decay, cancer], more...

Forum discussions with the word(s) "mouth" in the title:

'Melts in the mouth, not in the hand'
'put their studies where their mouth is' ...
(Punctuation) Eyes, eyes. / Mouth, mouth,
[bad-mouth somebody or speak ill of somebody]
6'' pot <-diameter of the pot mouth?
a big mouth and a big chip
a big mouth and blue <underlids>.
a big mouth-watering cake
a bottle of water to swig from to help the sour taste in my mouth
a closed mouth doesn’t get fed
A decided mouth
"A dog's mouth is unstable"
a fish’s mouth while it was eating
a girl covering her mouth who seems to be in ecstasy
A green chili has come to my mouth
a large head of a small stick constantly in his mouth
a mouth-yes-mind-no person
a pursy mouth
A question about "Smart mouth" in the song "All of me" by John Legend
a set look about the mouth
A sliver spoon in her mouth.
a small nose and mouth
a smile ghosted around the corners of his mouth
a spoon in one's mouth
A taste of ash in the mouth
A thing used to cover a dog's mouth
all mouth
all mouth and no trousers (AE version)
All the girls in the mouth!
An action of hands [hands around mouth to shout]
more...

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