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English definition of “guarantee”

guarantee

verb [T]    /ˌɡær·ənˈti, ˈɡær·ənˌti/
If you guarantee something, you promise that a particular thing will happen or exist : [+ (that) clause] I guarantee (you) that our team will play hard and have a shot at winning the championship . If something is guaranteed to happen or have a particular result , it is certain that it will happen or have that result : [+ to infinitive] Eating all that rich food is guaranteed to give you indigestion .
(Definition of guarantee verb from the Cambridge Academic Content Dictionary © Cambridge University Press)
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