sure
adverb
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definitely or positively (`sure' is sometimes used informally for `surely')“the results are surely encouraging”surely
adjective
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exercising or taking care great enough to bring assurancecertain
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impossible to doubt or dispute“indisputable (or sure) proof”indisputable
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having or feeling no doubt or uncertainty“confident and assured”certain
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certain to occurcertain
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reliable in operation or effectcertain
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physically secure or dependable“a sure footing”
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certain not to fail“a sure hand on the throttle”
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infallible or unfailing“a sure (or true) sign of one's commitment”
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(of persons) worthy of trust or confidence“a sure (or trusted) friend”trusted