Essential Meaning of insure
1 : to buy insurance for (something, such as property or health) He insured the boat. We insured our house against fire and flood damage.
2 : to provide insurance for (something, such as property or health) I found a company that will insure my car for less than I've been paying. This policy will insure your car against theft. also : to provide (someone) with insurance She had difficulty finding a company that would insure her.
3 US : to make (something) sure, certain, or safe : ensure They take great care to insure the safety and security of their home. We hope that careful planning will insure success.
Full Definition of insure
1 : to provide or obtain insurance on or for
2 : to make certain especially by taking necessary measures and precautions
: to contract to give or take insurance
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