• (RP) IPA: /ˈfɹɒθ ət ðə ˈmaʊθ/
• (GA) IPA: /ˈfɹɔθ ət ðə ˈmaʊθ/

froth at the mouth

1. To spew#Verb|spew saliva as froth#Noun|froth.
   • 1877, Anna Sewell, “A Strike for Liberty”, in Black Beauty: […], London: Jarrold and Sons, […], OCLC 228733457 ↗, page 109 ↗:

     What I suffered with that rein for four long months in my lady's carriage, it would be hard to describe, but I am quite sure that, had it lasted much longer, either my health or my temper would have given way. Before that, I never knew what it was to foam at the mouth, but now the action of the sharp bit on my tongue and jaw, and the constrained position of my head and throat, always caused me to froth at the mouth more or less.

2. (figurative) To rage#Verb|rage, to vent#Verb|vent one's anger#Noun|anger.

   She was almost frothing at the mouth when she heard about the cost of the car repairs.

• foam at the mouth
• frothing at the gash

• Russian: с пе́ной у рта
• Spanish: echar espumarajos por la boca