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general::
Phrase(s): guarantee against something
to certify that something bad will not happen. • No one can guarantee against that happening. • I can’t guarantee against something going wrong., Phrase(s): guarantee something against something (for something)
to certify that something will not fail, break, or wear out, usually for a period of time. • We guarantee this radio against defects for one year. • I bought a service contract to guarantee my car against defects.
McGrawhill's American Idioms And Phrasal Verbs