Word Origin a person who refuses to believe without proof; skeptic. John 20:24–29.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for doubting thomas a person who insists on proof before he will believe anything; sceptic Word Origin
Thomas (the apostle), who did not believe that Jesus had been resurrected until he had proof
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Idioms and Phrases with doubting thomas doubting Thomas
One who is habitually doubtful. For example,
He was a doubting Thomas about the coming merger, not believing it would ever happen. The term alludes to the disciple Thomas, who doubted Jesus's resurrection until he had first-hand evidence of it (John 20:24–29).
The American Heritage® Idioms Dictionary
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