Was their giveaway attitude.
Polly may be able to put up a big bluff, but your face is a dead giveaway.
Showing more than a normal interest would have been a giveaway.
It seemed like a significant giveaway, but he couldn't imagine why.
The accidental use of a first name could mean a dead giveaway at the wrong time.
That emphasis on the first 'are' was a giveaway.
I almost halted in alarm, but that might have been a giveaway.
Despite the tight beam, any communication could be a dead giveaway.
He drew near the rocket, thinking that the open hatch would be a dead giveaway.
The open hatch was the giveaway.
Your face is a dead giveaway.
They will call it a cheap giveaway.
It is the most glorious giveaway in the history of mankind!
That would be a dreadful giveaway.
The sentence was a clear giveaway that he had been in previous communication with Burr.
Wasn't it a dead giveaway?
Isn't that a sure giveaway and a trip up the river?
Your every word, your every mannerism, would be a dead giveaway.
My gimpy right wing was a dead giveaway.
It was a dead giveaway when Young struck both cartels simultaneously, if Hunter had read the data correctly.
Their bubbles would rise right past the frogmen, a dead giveaway!
What better giveaway than flint scraping against steel?
We were dealing with cleverness beyond thought, and every tiny giveaway must be taken care of.