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mouthful of marbles
A phrase used to describe the speech of someone who mumbles when talking. I have such a hard time understanding him—he always sounds like he has a mouthful of marbles.
say a mouthful
Fig. to say a lot; to say something very important or meaningful. When you said things were busy around here, you said a mouthful. It is terribly busy. You sure said a mouthful, Bob. Things are really busy.
You (really) said a mouthful.
Inf. Fig. You said exactly what needed to be said.; What you said was very meaningful and had great impact. Bill: Did you hear what I said to her? Jane: Yes. You said a mouthful. Was she mad? Bill: This is the worst food I have ever eaten. It is either stale, wilted, dry, or soggy! Tom: You said a mouthful!
say a mouthful
Utter something important or meaningful, as in You said a mouthful when you called him a fine musician. This term is often used to express agreement, much as you can say that again is. It was first recorded in 1790.
give someone a mouthfultalk to or shout at someone in an angry, abusive, or severely critical way; swear at someone. British informal
say a mouthfulmake a striking or important statement; say something noteworthy. North American informal
1. n. a true statement. You said a mouthful, and I agree.
2. n. a tirade. Paul really gave me a mouthful. I didn’t know I hurt his feelings.