Fail-safe synonyms | phrases

Phrases with similar meaning for Fail-safe

• tried and tested
• sure-fire
• idiot-proof
• never-failing
• safe and sound
• can't-miss
• tried and true
• well-established
• long-established
• good old-fashioned
• safety net
• safety valve
• safety device
• security guarantee
• government aid
• preventive measure
• protective umbrella
• safety plug
• sheet anchor
• free from danger
• in safety
• home-free
• out of danger
• home free
• in the bag
• cast-iron
• made certain
• for a fact
• for sure
• on ice
• sure enough
• safety precaution
• well built
• well engineered
• tried out
• put to the test
• time-honoured
• off the hook
• risk-free