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

"Oh, is that a fact?" growled the big Venusian.

From The Space Pioneers by Glanzman, Louis

Davy Byrne, sated after his yawn, said with tearwashed eyes: —And is that a fact?

From Ulysses by Joyce, James

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

From Cap'n Eri by Lincoln, Joseph Crosby

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

From The Elephant God by Casserly, Gordon