I. en ‧ sure S2 W1 AC /ɪnˈʃʊə $ -ˈʃʊr/ BrE AmE especially British English ( also insure American English ) verb [transitive]
to make certain that something will happen properly SYN make sure :
facilities to ensure the safety of cyclists
ensure (that)
The hospital tries to ensure that people are seen quickly.
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In everyday English, people usually say make sure rather than ensure :
▪
Please make sure all the windows are closed.
Make sure is followed by a clause (with or without that ), never a direct object:
▪ regulations to ensure their safety ➔ regulations to make sure (that) they are safe
II. in ‧ sure /ɪnˈʃʊə $ -ˈʃʊr/ BrE AmE verb
[ Date: 1400-1500 ; Origin: Probably from ensure ]
1 . [intransitive and transitive] to buy insurance so that you will receive money if something bad happens to you, your family, your possessions etc:
Have you insured the contents of your home?
insure (something/somebody) against loss/damage/theft/sickness etc
It is wise to insure your property against storm damage.
insure something for £1,000/$2,000 etc
You should insure the painting for at least £100,000.
2 . [transitive] to provide insurance for something or someone:
Many companies won’t insure young drivers.
3 . [transitive] an American spelling of ↑ ensure
insure (yourself) against something phrasal verb
to protect yourself against the risk of something bad happening by planning or preparing:
Take advice to insure yourself against being misled.