take the words out of someone's mouth
Anticipate what someone is about to say; also, completely agree with someone. For example, When you mentioned her dislike of fish you took the words right out of my mouth, or You took the words out of my mouth when you said he was stupid. This idiom was first recorded in 1574.
take the words out of someone's mouth
If you take the words out of someone's mouth, you say the thing that they were just about to say. `Let's have lunch.' — `Ah, you took the words right out of my mouth, Lisa.'
take the words out of someone's mouth
say what someone else was about to say.words right out of one's mouth, to take
To agree with someone completely; to anticipate what someone else is about to say. This vivid image was expressed as long ago as the sixteenth century. Richard Grafton used it in A Chronicle at Large (1568; published 1809): “The Pope . . . takying their wordes out of their mouthes, said . . .”