Meaning of assure

Definition of assure

(verb) make certain of; "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!"
inform positively and with certainty and confidence; "I tell you that man is a crook!"
assure somebody of the truth of something with the intention of giving the listener confidence; "I assured him that traveling to Cambodia was safe"
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"
cause to feel sure; give reassurance to; "The airline tried to reassure the customers that the planes were safe"
make a promise or commitment

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