Antonyms and Synonyms for certain

1. certain (adj.)

definite but not specified or identified

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2. certain (adj.)

having or feeling no doubt or uncertainty; confident and assured

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3. certain (adj.)

established beyond doubt or question; definitely known

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4. certain (adj.)

certain to occur; destined or inevitable

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5. certain (adj.)

reliable in operation or effect

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6. certain (adj.)

exercising or taking care great enough to bring assurance

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7. certain (adj.)

established irrevocably

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