The mouth is located on the lower part of the face. You know the one, we use it to speak all that lovely English we’ve been learning here! The plural is ‘mouths’ (the ‘th’ is voiceless in plural).

mouth idioms list

Let’s look at some popular body idioms that contain the word ‘mouth’.

  • all mouth and no trousers
    meaning – someone says they are going to do something but never do
    example – Stop being a wimp and ask him out, you’re all mouth and no trousers.
  • born with a silver spoon in one’s mouth
    meaning – born into a rich family
    example – I would hate to have been born with a silver spoon in my mouth. I like working for my things.
  • don’t look a gift horse in the mouth
    meaning – don’t be ungrateful, graciously accept gifts
    example – I know you shouldn’t look a gift horse in the mouth, but I really can’t accept £500.
  • foot in mouth disease
    meaning – say inappropriate/insensitive things at the wrong time
    example – Please don’t let Andy speak to the clients, he’s got foot in mouth disease.
  • have a big mouth
    meaning – someone talks a lot and can’t keep secrets
    example – Corey has a big mouth; I hope a year 11 shuts him up one day.
  • like butter wouldn’t melt (in someone’s mouth)
    meaning – someone gives the impression of being sweet and innocent
    example – My kids look like butter wouldn’t melt, but they’re little devils.
  • live from hand to mouth
    meaning – very poor, have just enough money to survive
    example – We are living from hand to mouth at the moment and we have another baby on the way.
  • make one’s mouth water
    meaning – your mouth is full of saliva because of the smell/taste of food
    example – The smell of my grandma’s cooking always made my mouth water.
  • put one’s money where one’s mouth is
    meaning – make a bet or do something instead of just talking about it
    example – The kitchen will be finished by summer. I’ll put my money where my mouth is.
  • put words into someone’s mouth
    meaning – inaccurately report what someone has said
    example – The journalist put words in my mouth. I didn’t say any of those horrible things.
  • straight from the horse’s mouth
    meaning – hear something from the source/most reliable person
    example – I don’t believe you. I need to hear it straight from the horse’s mouth.
  • watch one’s mouth
    meaning – be careful about what you say
    example – I have to watch my mouth around the children. They pick up bad words very quickly.
  • word of mouth
    meaning – hear about something from people not through adverts
    example – Most of our business comes from word of mouth.

mouth idioms list with pictures

Here’s some real life examples.

idiomatic expressions with body parts - mouth
common mouth idioms and expressions in English - all mouth and no trousers meaning
common mouth idioms and expressions in English - born with a silver spoon meaning
horse idioms - don’t look a gift horse in the mouth
mouth idioms list - foot in mouth disease
have a big mouth meaning
like butter wouldn't melt meaning
live from hand to mouth meaning
mouth idioms list - make one's mouth water
put one’s money where one’s mouth is meaning
common mouth idioms and expressions in English - put words in someone's mouth
straight from the horse's mouth meaning
mouth idioms in English- watch one’s mouth meaning
mouth idioms and expressions - word of mouth

You can download a table of ‘mouth’ idioms and expressions below.

If you’ve enjoyed this page, don’t forget to check out some more body idioms by clicking on the links below.