Fail safe


Synonyms for fail safe
adj guaranteed not to fail

sound
confident
covered

foolproof
protected
reliable

secure
sure
reliant

safeguarded

Synonyms
adj infallible

flawless
reliable
sure-fire
unassailable
perfect

tested
tried
guaranteed
certain
dependable

fail-safe
faultless
safe
sure
unerring

unfailing
goofproof
idiot-proof
never-failing

Synonyms
adj dependable

foolproof
certain

excellent
fail-safe

good
infallible

reliable

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