not know (any) better

(redirected from doesn't know any better)

not know (any) better

1. To not have the requisite knowledge or development to behave correctly or make an informed decision. Don't get so mad at him for writing on the walls—he's two, he doesn't know any better.
2. To not have information about something. Used in the construction "if I didn't know (any) better," used sarcastically or ironically to suggest that something is obviously the case. If I didn't know better, I'd be inclined to believe that these mega corporations don't actually care two figs about consumers. Say, if I didn't know any better, I'd think you were actually enjoying yourself, just like I said you would!
See also: better, know, not

not know any ˈbetter

not behave well, politely, etc. because you have never learned how to: You can’t blame him for his bad table manners; he doesn’t know any better.
See also: any, better, know, not
References in periodicals archive ?
I could understand if he was in like middle school or high school, where he really understands - even fourth or fifth grade - but he doesn't know any better," she said.
Be a little compassionate to her, for she obviously doesn't know any better.
Essentially, the public likes garbage because it doesn't know any better.
But she's fine, healthy and happy, and doesn't know any better.
But let's be generous and assume your co-worker doesn't know any better.
I think that the average person who throws a flag away just doesn't know any better way to dispose of it.
System 2 can also make mistakes because it doesn't know any better.
He doesn't know any better than I do where those ideas will come from, but at least he has some understanding of why and how they are important.
Some might point out that a patient, particularly in a psychiatric hospital, is at as much risk of being a victim of negligent care, including willful and wanton failure to protect patients from patients who present a risk to them just as a physician or nurse who is negligent, whether willful or wanton or just because he or she doesn't know any better.
If he doesn't know any better than to eat my toys, he can we play together?
Ryan doesn't know any better and lifted it up and put it in his mouth.
And we're not talking about some kid fighter who doesn't know any better.
And there's no longer any need to make excuses for it with a faintly embarrassed smile, as if it's a wayward child that doesn't know any better.
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