What is the opposite of surefire?

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

Contexts ▼▲ Adjective Opposite of infallible or not very likely to fail Opposite of always successful, not likely to fail Opposite of able to be relied upon or depended on Opposite of not capable of being denied, challenged, or disputed Noun Opposite of an event that is definitely going to take place … more ▼ ▲ Adjective ▲ 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 ▲ Opposite of always successful, not likely to fail fallible doubtful dubious error-prone uncertain undependable unreliable unsure defective erring faultful faulty imperfect flimsy disreputable questionable untrustworthy suspect unsubstantiated unsupported shaky dodgy iffy flakeyUS weak fallacious falsified touch-and-go rocky unstable flakyUK Adjective ▲ Opposite of able to be relied upon or depended on fallible unreliable disloyal ephemeral inconstant uncertain undependable unfaithful unsure untrustworthy changing erratic failing impermanent limited unstable iffy inconclusive equivocal ambiguous speculative questionable error-prone unpredictable errable flawed errant doubting indefinite unconfident undecided Adjective ▲ Opposite of not capable of being denied, challenged, or disputed questionable answerable arguable contradictable controvertible debatable disputable doubtable moot negotiable problematic problematical refutable changeable uncertain variable Noun ▲ Opposite of an event that is definitely going to take place uncertainty ambiguity concept doubt hesitation idea impossibility possibility questionableness theory Find more words! 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Sentences with the word surefire Words that rhyme with surefire Use our Antonym Finder Nearby Words sure-fire sure-footed sure ground sure-handed sure-handedly surelier sure-enough sure bet sure as can be sure surd surcharging 8-letter Words Starting With s su sur sure suref surefi surefir