American English

Definition of mouth noun from the Oxford Advanced American Dictionary

      

    mouth

     noun
    noun
    NAmE//maʊθ//
     
    (pl. mouths
    NAmE//maʊðz//
     
    )
     
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    part of face
  1. 1the opening in the face used for speaking, eating, etc.; the area inside the head behind this opening She opened her mouth to say something. His mouth twisted into a wry smile. Their mouths fell open (= they were surprised). Don't talk with your mouth full (= when eating). The creature was foaming at the mouth. see also foot-and-mouth disease
  2. person needing food
  3. 2a person considered only as someone who needs to be provided with food Now there would be another mouth to feed. The world will not be able to support all these extra hungry mouths.
  4. entrance/opening
  5. 3 mouth (of something) the entrance or opening of something the mouth of a cave/tunnel see also goalmouth
  6. of river
  7. 4the place where a river joins the ocean A number of industries sprang up around the mouth of the river.
  8. way of speaking
  9. 5a particular way of speaking He has a foul mouth on him! Watch your mouth (= stop saying things that are rude and/or offensive)! see also loudmouth
  10. -mouthed
  11. 6
    NAmE//maʊðd//
     
    , NAmE//maʊθt//
     
    (in adjectives) having the type or shape of mouth mentioned a wide-mouthed old woman a narrow-mouthed cave see also open-mouthed
  12. 7(in adjectives) having a particular way of speaking a rather crude-mouthed individual see also foul-mouthed, mealy-mouthed
  13. Idioms
    be all mouth (informal)
     
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    if you say someone is all mouth, you mean that they talk a lot about doing something, but are, in fact, not brave enough to do it
    born with a silver spoon in your mouth (saying)
     
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    having rich parents
    butter wouldn't melt (in somebody's mouth) (informal)
     
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    used to say that someone seems to be innocent, kind, etc. when they are not really
    by word of mouth
     
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    because people tell each other and not because they read about it The news spread by word of mouth.
    down in the mouth
     
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    unhappy and depressed
      foam at the mouth
       
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    1. 1(especially of an animal) to have a mass of small bubbles in and around its mouth, especially because it is sick or angry
    2. 2(informal) (of a person) to be very angry
    (straight) from the horse's mouth (informal)
     
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    (of information) given by someone who is directly involved and therefore likely to be accurate
      have a big mouth
       
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    1. 1In this idiom the main stress is on mouth. to be bad at keeping secrets
    2. 2to talk too much, especially about your own abilities and achievements
    somebody's heart is in their mouth
     
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    someone feels nervous or frightened about something My heart was in my mouth as she opened the envelope.
    keep your mouth shut (informal)
     
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    to not talk about something to someone because it is a secret or because it will upset or annoy them I've warned them to keep their mouths shut about this. Now she's upset—why couldn't you keep your mouth shut?
    leave a bad/nasty taste in the mouth
     
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    (of events or experiences) to make you feel disgusted or ashamed afterward
    live (from) hand to mouth
     
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    to spend all the money you earn on basic needs such as food without being able to save any money
    look a gift horse in the mouth
     
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    (usually with negatives) (informal) to refuse or criticize something that is given to you for nothing I'm never one to look a gift horse in the mouth.
    melt in your mouth
     
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    (of food) to be soft and very good to eat They serve steaks that just melt in your mouth.
    out of/from the mouths of babes (saying)
     
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    used when a small child has just said something that seems very wise or intelligent
    put your foot in your mouth
     
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    to say or do something that upsets, offends, or embarrasses someone I really put my foot in my mouth with Ella—I didn't know she and Tom broke up.
    put your money where your mouth is (informal)
     
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    to support what you say by doing something practical; to show by your actions that you really mean something
    put words into somebody's mouth
     
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    to suggest that someone has said something when in fact they have not
    run off at the mouth (informal)
     
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    to talk too much, in a way that is not sensible
      shoot your mouth off (about something) (informal)
       
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    1. 1to talk with too much pride about something
    2. 2to talk about something that is private or secret
    shut your mouth/face! (slang)
     
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    a rude way of telling someone to be quiet or stop talking
    take the bread out of somebody's mouth
     
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    to take away someone's job so that they are no longer able to earn enough money to live
    take the words right out of somebody's mouth
     
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    to say what someone else was going to say
    watch your language/mouth/tongue
     
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    to be careful what you say in order not to offend someone or make them angry Watch your language, young man!
See the Oxford Advanced Learner's Dictionary entry: mouth