English Dictionary

foam up

verb

(intransitive) To become foamy, create a foam; to rise with a foamy surface or covered with something resembling foam / (intransitive, figuratively) To take place, arise, erupt, develop.

The soap will foam up when you add water.

意味（1）

(intransitive) To become foamy, create a foam; to rise with a foamy surface or covered with something resembling foam

In a chastened mood, Helen returned to her own room and lit her spirit-lamp, in order to re-boil the coffee. She was watching the brown bubbles foam up in the saucepan, when she heard the front-door bell.

意味（2）

(intransitive, figuratively) To take place, arise, erupt, develop.

A tide of Republican scandal foamed up last week and engulfed Germany's greatest post-War soldier, Hans von Seeckt, “The Man with the Iron Monocle.”

意味（3）

(transitive) To cause to become foamy; to cover with foam.

As I routinely foamed up his grand lattes, he’d share details about his homicide cases (not to mention his rocky marriage, which was still bordering on divorce).