foam up

foam up

To achieve a foamy, sudsy, or frothy consistency. The soap started to foam up once I mixed it with water.
See also: foam, up
Farlex Dictionary of Idioms.

foam up

[for something, such as soap or milk] to make foam or lather. Milk will foam up when it is boiled. The boiling soup foamed up and slopped over the pot.
See also: foam, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

foam up

v.
To become more foamy: Shaving cream foams up when you spray it from the can.
See also: foam, up
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • on one's
  • on someone's
  • out of one's
  • (I've) got to go
  • save someone's skin
  • (Have you) been OK?
  • other than
  • other than (something)
  • pillow-biter
  • jump down