What is the opposite of fail-safe?

Need antonyms for fail-safe? Here's a list of opposite words from our thesaurus that you can use instead.

Contexts (fallible) Opposite of infallible or not very likely to fail (fallible) Opposite of infallible or not very likely to fail (of a product) Opposite of consistently good in quality or performance Adjective ▲ (fallible) Opposite of infallible or not very likely to fail fallible imperfect frail weak flawed erring mortal untrustworthy careless unreliable errable human errant error-prone open to error liable to err prone to error prone to err Adjective ▲ (fallible) Opposite of infallible or not very likely to fail fallible erratic undependable unreliable unstable ambiguous equivocal iffy inconclusive speculative errable errant error-prone flawed questionable uncertain unpredictable untrustworthy doubting indefinite unconfident undecided “How can you force these people to leave based on a fallible weather forecast?” Adjective ▲ (of a product) Opposite of consistently good in quality or performance undependable unreliable unsafe erratic inferior substandard unacceptable unsatisfactory unsound unstable awful cheap cheapo defective low-grade low-quality second-rate “If you buy an imitation, you will likely be getting an undependable product.” Find more words! 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Sentences with the word fail-safe Words that rhyme with fail-safe What is the past tense of fail-safe? What is the plural of fail-safe? Use our Antonym Finder Nearby Words fails against fails at fails in fails to fails to absorb fails to agree failsafe fails fail miserably failing to understand failing to think of failing to take in