if you believe that, you'll believe anything
idiom
—used sarcastically to discredit the speaker or a statement
"He says he's going to become a doctor." "If you believe that, you'll believe anything!"
Cite this Entry
“If you believe that, you'll believe anything.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/if%20you%20believe%20that%2C%20you%27ll%20believe%20anything. Accessed 3 Nov. 2025.
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Merriam-Webster unabridged
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