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fail-safe

see definition of fail-safe
  • adjguaranteed not to fail
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Synonyms for fail-safe

adj guaranteed not to fail
  • sound
  • confident
  • covered
  • foolproof
  • protected
  • reliable
  • reliant
  • safeguarded
  • secure
  • sure

More words related to fail-safe

foolproof

adjective. infallible

sure-fire

adjective. dependable

surefire

adjective. dependable
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.