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.
Nearby words
saxony-anhalt, saxophone, saxtuba, say, say (cry) uncle, say a mouthful, say grace, say one's piece, say the word, say uncle, say's law
The American Heritage® Idioms Dictionary
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