Antonyms of certain from BoostVocab

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certain

/'sɜrtən/

Synonyms of certain Antonyms of certain Examples of certain Usage of certain Parts of certain Definition that contains certain Words sounding like certain Explanation of certain

adjective
having or feeling no doubt or uncertainty; confident and assured
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"felt certain of success" "was sure (or certain) she had seen it"

Similar:

sure confident positive convinced

Opposite:

uncertain
adjective
certain to occur; destined or inevitable
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"he was certain to fail" "his fate is certain" "In this life nothing is certain but death and taxes" "he faced certain death"

Similar:

sure predestined destined foreordained fated bound doomed predestinate in for

Opposite:

uncertain
adjective
exercising or taking care great enough to bring assurance
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"be certain to disconnect the iron when you are through"

Similar:

sure careful
adjective
reliable in operation or effect
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"a quick and certain remedy"

Similar:

sure reliable dependable
adjective
established irrevocably
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Similar:

sealed
adjective
definite but not specified or identified
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"set aside a certain sum each week" "to a certain degree" "certain breeds do not make good pets" "certain members have not paid their dues" "a certain popular teacher" "a certain Mrs. Jones"

Similar:

definite
adjective
established beyond doubt or question; definitely known
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"what is certain is that every effect must have a cause" "it is certain that they were on the bus" "his fate is certain" "the date for the invasion is certain"

Similar:

sure as shooting definite indisputable sure

Opposite:

uncertain

Antonyms of certain