Question 1

What does "dummy up" mean?

Accepted Answer

(Informal, chiefly American) To refuse to speak or give information, especially when questioned.

Question 2

How do you use "dummy up" in a sentence?

Accepted Answer

The suspect dummied up as soon as his lawyer arrived and wouldn't say another word.

Question 3

Is "dummy up" formal or informal?

Accepted Answer

"dummy up" is informal — used mainly in casual conversation. The 'go silent' sense is primarily older American slang, often associated with underworld or crime fiction from the mid-20th century. The 'create a mock-up' sense appears in design and publishing contexts. Neither sense is common in contemporary standard English.

dummy up

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