Learn how to say Ensure correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word ensure:
make certain that (something) will occur or be the case:
the client must ensure that accurate records are kept
make certain of obtaining or providing (something):
legislation to ensure equal opportunities for all
[no object] (ensure against) make sure that (a problem) does not occur:
only by researching stocks thoroughly can a client ensure against being misled
late Middle English (in the senses ‘convince’ and ‘make safe’): from Anglo-Norman French enseurer, alteration of Old French aseurer, earlier form of assurer (see assure). Compare with insure
On the difference between ensure and insure, see insure (usage).