Synonym: affirm, assure, back, certify, cover, defend, determine, endorse, guarantee, make sure, protect, safeguard, shelter, sponsor, vouch, warrant. Similar words: ensure, censure, insurgent, insurance, in surprise, insurgence, insurmountable, in sum. Meaning: [ɪn'ʃʊr /-'ʃʊə] 
v. 1. be careful or certain to do something; make certain of something 2. make certain of 3. protect by insurance 4. take out insurance for.
v. 1. be careful or certain to do something; make certain of something 2. make certain of 3. protect by insurance 4. take out insurance for. 
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1 It is advisable to insure your life against accident.
2 Which company do you insure with?
3 I insure that you will succeed.
4 Check your work to insure its accuracy.
5 Insure your baggage before you leave home.
6 For protection against unforeseen emergencies, you insure your house, your furnishings and your car.
7 Make sure you insure your camera against loss or damage.
8 You should insure against loss of heat by having double glazing.
9 How much will it cost to insure my car against accident?
10 Take advice to insure yourself against being misled.
11 We insure against all damage,(www.Sentencedict.com) accidental or otherwise.
12 Many companies won't insure young drivers.
13 I'll take more care to insure against making mistakes.
14 Vaccinations insure one against diseases.
15 An insurance company will insure your life.
16 Will it insure success to you?
17 No one can insure you from failure.
18 Many companies won't insure new or young drivers.
19 You should insure the painting for at least ￡100,000.
20 We automatically insure your belongings against fire and theft.
21 Will it insure success to [ for ] you?
22 We thought we'd insure against rain by putting a tent up where people could take shelter.
23 Make sure you insure your home contents for an adequate amount.
24 The company can refuse to insure a property that does not have window locks.
25 Every father should insure himself against premature death or prolonged illness for the sake of his wife and children.
26 It is wise to insure your property against storm damage.
27 They refused to insure us because they said we're too old.
28 Think carefully before you insure against accident, sickness and redundancy.
29 All the electronics in the world cannot insure against accidents, though.
30 It doesn't cost much to insure your personal belongings.
More similar words: ensure, censure, insurgent, insurance, in surprise, insurgence, insurmountable, in sum, insult, insulate, insulated, peninsula, commensurate, sure, in support of, assure, surety, for sure, insubordinate, insufficient, insubstantial, insufferable, measure, leisure, measured, pleasure, make sure, exposure, composure, treasure.