froth at the mouth UK /ˈfɹɒθ ət ðə ˈmaʊθ/US /ˈfɹɔθ ət ðə ˈmaʊθ/ verb2 •To spew saliva as froth.He was so excited, he was almost frothing at the mouth. — 1966 •(figurative) To rage, to vent one's anger.She was almost frothing at the mouth when she heard about the cost of the car repairs. formsfrothed at the mouth · frothing at the mouth · froths at the mouth
