fail safe
/ˈfeɪlˌseɪf/
noun
- A system or mechanism that ensures safety if something fails.
- The airplane has multiple fail-safes to prevent engine failure.
- Engineers added a fail-safe to the bridge to handle extreme winds.
- The security system includes a fail-safe that locks all doors during a fire.
adjective
- Designed to stop working or return to a safe condition if something goes wrong.
- The software includes a fail-safe mode that prevents data corruption.
- The nuclear reactor has a fail-safe system that shuts it down automatically.
- All elevators are equipped with fail-safe brakes in case of power loss.
- Certain to succeed or be effective; guaranteed not to fail.
- The recipe is fail-safe—even beginners can make it perfectly.
- She thought her plan was fail-safe, but unexpected problems arose.
- He claimed his investment strategy was fail-safe, but it still lost money.