ଅର୍ଥ : Not liable to failure.
ଉଦାହରଣ :
A foolproof identification system.
The unfailing sign of an amateur.
An unfailing test.
ସମକକ୍ଷ : unfailing
ଅର୍ଥ : Proof against human misuse or error.
ଉଦାହରଣ :
Foolproof this appliance.
ସମକକ୍ଷ : goof-proof, goofproof