assurance

C1
UK /əˈʃʊərəns/US /əˈʃʊrəns/

Meaning

noun
a statement that something will certainly be true or will certainly happen, particularly when there has been doubt about it
They called for assurances that the government is committed to its education policy.

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there was no assurance that it would be effective if we scaled.

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there was no assurance that it would be effective if we scaled.

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