foam up
Make a lot of bubbles or froth, or become full of foam.
Meanings
Of a liquid or substance, to produce a large amount of foam or bubbles.
"The drain cleaner foamed up violently when it came into contact with the blockage."
To cause a liquid to produce foam by agitating or heating it.
"He foamed up the milk with the steam wand before pouring it into the cappuccino."
Used for liquids, cleaning products, beer, soap, or any substance that produces foam when agitated or mixed. Can be intransitive ('the water foamed up') or transitive ('the barista foamed up the milk'). Also used in informal speech to describe someone becoming very agitated or angry ('foamed up with rage'), though this is rare.
Commonly used with
Forms
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