The servant, who had not stayed long enough to have crossed the court to Conrad’s apartment, came running back breathless, in a frantic manner, his eyes staring, and foaming at the mouth.

Sarin is colourless, odourless and tasteless. It causes a range of symptoms, from respiratory failure, eye irritation, and blurred vision to constricted pupils and drooling. People foam at the mouth when forced to breathe through massive secretions of fluid in their lungs. The expelled foam can be tinged pink with blood.

[…] when I returned from thrashing you I went storming through the house, kicking about the pots and pans, and foaming at the mouth in such a way that I not only stopped the spies laughing, but put them in fear of their lives.

2015, Amrit Dhillon, “India struggles to develop what it sadly lacks: A sense of humour” in The Globe and Mail, 24 February, 2015, http://www.theglobeandmail.com/opinion/india-struggles-to-develop-what-it-sadly-lacks-a-sense-of-humour/article23178407/
Various groups in Mumbai filed police complaints about the alleged obscenity of the show. Some TV anchors foamed at the mouth over how the “modesty of Indian culture” had been desecrated.

Foam at the mouth

Meaning

Verb

Synonyms