froth at the mouth

froth at the mouth

1. Literally, to produce foam from one's mouth, as due to a disease or other ailment. All of a sudden she collapsed in a fit, convulsing and frothing at the mouth.
2. Figuratively, to be viciously and uncontrollably angry or upset. The protesters had formed outside the courthouse, frothing at the mouth as the alleged murderer made his way up the steps.
See also: froth, mouth
Farlex Dictionary of Idioms.

froth (or foam) at the mouth

be very angry.
This phrase stems from the involuntary production of large amounts of saliva from the mouth during a seizure or fit.
See also: froth, mouth
Farlex Partner Idioms Dictionary
See also:
  • foam
  • foam at the mouth
  • foam at the mouth, to
  • froth
  • the cure is worse than the ailment
  • the cure is worse than the disease
  • a treatment worse than the disease
  • ailment
  • cure
  • disease
References in periodicals archive
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But within minutes of swallowing the pill the cat started to shake and froth at the mouth and the distraught owner rushed the animal to the vet.
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Innocent passers-by cower from the sound waves, elderly citizens are pinned against walls by the oscillation and helpless individuals like me froth at the mouth at their inability to take action.
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Whispering callers made 27 per cent of people froth at the mouth followed by messages with too much detail which annoyed one in six.
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