- goofproof: proof against human misuse or error; "foolproof this appliance"
- not liable to failure; "a foolproof identification system"; "the unfailing sign of an amateur"; "an unfailing test"
- Foolproof is a 2003 Canadian heist film directed by William Phillips and starring Ryan Reynolds, David Suchet, Kristin Booth, Joris Jarsky, and James Allodi. It was the first attempt by a Canadian studio to create a heist movie, in the same vein as Ocean's Eleven. ...
- The FoolProof Initiative is a project by America’s credit unions that teaches financial literacy to consumers in the United States and Canada through a variety of programs. ...
- For a device: protected, or designed to be proof against misuse or error; fail-safe; For an idea or plan: infallible, or bulletproof
- a toda prueba; infalible
- incapable of failure