If you believe that, you’ll believe anything
phrase
Used to suggest that someone is easily fooled or too gullible.
He says he'll buy a new car next week. If you believe that, you'll believe anything.
Often appears as...
- if you believe it
- you'll believe anything; if she believes that
Usage tips
Disapproving
Colloquial
phrase
Used to suggest that someone is easily fooled or too gullible.
He says he'll buy a new car next week. If you believe that, you'll believe anything.
Often appears as...
- if you believe it
- you'll believe anything; if she believes that
Usage tips
Disapproving
Colloquial
Definition 1 of 1
Pro Tip 1/3Sarcasm Alert
This phrase is often used sarcastically to mock someone's credulity.
He claimed he'd been to Mars. If you believe that, you'll believe anything.
Pro Tip 2/3Not Literal
It's not meant to be taken literally; it exaggerates to make a point.
She says she knows the president personally. If you believe that, you’ll believe anything.
Pro Tip 3/3Colloquialism
The phrase is informal and best used in casual conversation, not formal writing.
He's promised not to be late again—if you believe that, you'll believe anything!
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