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insure

in·sure

UK/ɪnˈʃɔː(ɹ)/ US/ɪnˈʃʊə(ɹ)/ uncommon dated us

verb

1.

be careful or certain to do something; make certain of something

  • “He verified that the valves were closed”
  • “See that the curtains are closed”
  • “control the quality of the product”
Synonyms
2.

make certain of

  • “This nest egg will ensure a nice retirement for us”
  • “Preparation will guarantee success!”
Synonyms
3.

protect by insurance

  • “The insurance won”
Synonyms
4.

take out insurance for

Origin

First attested in c. 1440, as a variant of Middle English ensuren (from Anglo-Norman enseurer, itself from Old French en- + seür (“sure”), probably influenced by Old French asseürer (“to assure”)); took on its particular sense of "make safe against loss by payment of premiums" in 1635, replacing assure. Doublet of ensure.

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WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.