says who?

Who claims the truth of this statement, which I don't believe? For example, That horse of your will never win a race.—Says who? This slangy expression of disagreement or disbelief may also be put in declarative form, says you!, meaning “I disagree with what you just said.” For example, It was an accident, I didn't mean to break it.—Says you! You've always hated that vase. [First half of 1900s]

QUIZZES

DON’T VACILLATE! VANQUISH THIS WORD OF THE DAY QUIZ!

It’d be a real faux pas to miss this quiz on the words from August 3–9, 2020!
Question 1 of 7
What does “vacillate” mean?
to waver in mind or opinion; be indecisive or irresolute.
to cause to be empty or unoccupied.
to assent tacitly; agree; consent.
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Words nearby says who?

say one's piece, Sayreville, says, Say's law, say-so, says who?, say the word, say uncle, Sayville, sayyid, Sazerac
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.