His anger was so intense that he was foaming at the mouth.
intensity
Frequency:
60
%
The intensity of his emotions caused him to foam at the mouth.
rabies
Frequency:
50
%
The dog with rabies was foaming at the mouth.
madness
Frequency:
40
%
The madness in his eyes was matched by the foam at his mouth.
Idiomatic Expressions for foaming at the mouth
Phrase: Foaming at the mouth
Meaning: To be extremely excited or enthusiastic
Usage: The fans were foaming at the mouth when their team scored the winning goal.