froth at the mouth
Pronunciation:
/ˈfɹɒθ ət ðə ˈmaʊθ//ˈfɹɔθ ət ðə ˈmaʊθ/verb
Definitions
To spew saliva as froth.
To rage, to vent one's anger.
Example: She was almost frothing at the mouth when she heard about the cost of the car repairs.