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guarantee

verb [T] (MAKE CERTAIN)
 
 
/ˌɡær.ənˈtiː/

Definition

If something guarantees something else, it makes certain that it will happen: [+ (that)] The £50 deposit guarantees (that) people return the boats after their hour has finished.CertaintyConfidence and self-assurance If something is guaranteed to happen or have a particular result, it is certain that it will happen or have that result: [+ to infinitive] Just looking at a picture of the sea is guaranteed to make me feel sick.CertaintyConfidence and self-assurance
(Definition of guarantee verb (MAKE CERTAIN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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