Sentence examples for not foolproof from inspiring English sources

But it's not foolproof.

It's not foolproof, though.

But they are not foolproof.

But it is not foolproof.

These treaties are not foolproof.

The Oxitec technique, however, is not foolproof.

It is not foolproof, by any means.

Still, the model is not foolproof.

But the shield is not foolproof.

Though handy, it is not foolproof.

This feature is not foolproof, though.