foolproof

You might wonder how these products work and whether they're foolproof enough to put the fear of bleeding through your clothes at bay.

As suppliers scramble to call new vendors or reroute supply lines, it’s clear that no one has a foolproof plan.

But there is one foolproof sign that groundwater is disappearing: The earth above it collapses as the ground compresses like a drying sponge.

David Bolt, the Independent Chief Inspector of Borders and Immigration, said the absence of a "foolproof test" of age it was "inevitable that some age assessments will be wrong".

The second question on this foolproof rubric is, “Does the shark movie have a necessary degree of camp that both reveres and respects that it is, indeed, a shark movie?”