foam at the mouth

Idioms  

1. Be extremely angry, as in She was foaming at the mouth over the judge's ruling. This hyperbolic term uses the verb foam in the sense of “froth at the mouth,” a usage generally applied to animals such as horses and dating from about a.d. 950. [1400s]

---

Example Sentences

See Examples For:

foam at the mouth

Not all animals with rabies will foam at the mouth, though some will if the disease is in a more advanced stage.

From Seattle Times ● Sep. 29, 2021

They’ll foam at the mouth for the barky sound of the Manchester post-punk band.

From Washington Post ● Jul. 15, 2021

Their lungs produce more mucus which can make them cough and foam at the mouth.

From The Guardian ● Mar. 8, 2018

Well, it’s his party and he can foam at the mouth if he wants to.

From US News ● Aug. 17, 2016

How awful it would be if that big man were to roll his eyes and foam at the mouth and shriek, "Poison, poison!"

From Absolution by Clara Viebig