English

Definition of ensure verb from the Oxford Advanced Learner's Dictionary

    

ensure

 verb
(also insure especially in North American English) verb
BrE BrE//ɪnˈʃʊə(r)//
 
, BrE//ɪnˈʃɔː(r)//
 
; NAmE NAmE//ɪnˈʃʊr//
 
Verb Forms present simple I / you / we / they ensure
BrE BrE//ɪnˈʃʊə(r)//
 
, BrE//ɪnˈʃɔː(r)//
 
; NAmE NAmE//ɪnˈʃʊr//
 
he / she / it ensures
BrE BrE//ɪnˈʃʊəz//
 
, BrE//ɪnˈʃɔːz//
 
; NAmE NAmE//ɪnˈʃʊrz//
 
past simple ensured
BrE BrE//ɪnˈʃʊəd//
 
, BrE//ɪnˈʃɔːd//
 
; NAmE NAmE//ɪnˈʃʊrd//
 
past participle ensured
BrE BrE//ɪnˈʃʊəd//
 
, BrE//ɪnˈʃɔːd//
 
; NAmE NAmE//ɪnˈʃʊrd//
 
-ing form ensuring
BrE BrE//ɪnˈʃʊərɪŋ//
 
, BrE//ɪnˈʃɔːrɪŋ//
 
; NAmE NAmE//ɪnˈʃʊrɪŋ//
 
 
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to make sure that something happens or is definite ensure something The book ensured his success. ensure somebody something Victory ensured them a place in the final. ensure (that)… Please ensure (that) all lights are switched off. Word Origin late Middle English (in the senses ‘convince’ and ‘make safe’): from Anglo-Norman French enseurer, alteration of Old French aseurer, earlier form of assurer, based on Latin ad- ‘to’ (expressing change) + securus, from se- ‘without’ + cura ‘care’. Compare with insure.Extra examples The alternative simply ensures that the problem will get worse. The system not only ensures maximum discounts, but also helps the company track usage. The therapist must treat the cause of the problem, thereby ensuring the symptoms do not return. We must take steps now to ensure the survival of these animals. provisions designed to ensure safe conditions of work Please ensure that all lights are switched off.
See the Oxford Advanced American Dictionary entry: ensure