is that a fact?

Idioms  

1. Also, is that so? Phrases indicating that one is following what another person is saying. These expressions, which require no reply, can be used either straightforwardly, as in You mean you've flown to Paris three times just this month? Is that a fact? or sarcastically, expressing disbelief or contempt, as in Just wait, I'll be promoted over you before the year is out.—Oh yeah, is that so? [Late 1800s]

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Example Sentences

SG: I was going to say, is that a fact?

From Seattle Times • Jun. 7, 2022

"By Jove, is that a fact, Dermot?" cried Payne.

From The Elephant God by Casserly, Gordon

Then Captain Eri said: "Mr. Hazeltine, now, honest and true, is that a fact?"

From Cap'n Eri by Lincoln, Joseph Crosby

"But is that a fact?" asked Mr. O'Connor.

From Dubliners by Joyce, James

"Then unless we started up, and ran for it, Gabe could get there sooner than our motor boat; is that a fact, Tony?"

From Chums in Dixie or The Strange Cruise of a Motorboat by Rathborne, St. George