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Use "doubting" in a sentence
"He’s the very definition of faithless—and the origin of the term doubting Thomas."
"All of his friends knew what he was going to do, and none of them was the least bit surprised, for Liam was known as the doubting Thomas of the group and also the most curious."
"We felt justified in doubting it, and looked forward, with cruel curiosity I admit, to the moment when this renowned and universally admired beauty would be called on to throw aside her veil axed reveal the highly praised features which had been so openly scorned for the sake of one whose chief claims to regard lay in her great wealth."