Select the most appropriate meaning of the underlined idiom in the given sentence.

He is foaming at the mouth about the committee's decision.

To be enraged and show it

The most appropriate meaning of the underlined idiom in the given sentence is to be enraged and show it.

The idiom "foaming at the mouth" is used to describe someone who is very angry and is showing it. The person may be yelling, swearing, or making other angry gestures. The idiom is thought to come from the fact that dogs sometimes foam at the mouth when they are angry.

The other options are not as accurate descriptions of the meaning of the idiom.

• To cause damage to someone: This idiom is more accurately described as "to tear someone apart."
• To not recognize something good: This idiom is more accurately described as "to be blind to someone's good qualities."
• To be upset about something that happened in the past: This idiom is more accurately described as "to be haunted by the past."