definition of
assure

[1] #1 assure v. [guarantee, ensure, insure, secure] make certain of; "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!". wn

[2] #2 assure v. [tell] inform positively and with certainty and confidence; "I tell you that man is a crook!". wn

[3] #3 assure v. assure somebody of the truth of something with the intention of giving the listener confidence; "I assured him that traveling to Cambodia was safe". wn

[4] #4 assure v. [see, check, insure, see to it, ensure, control, ascertain] 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". wn

[5] #5 assure v. [reassure] cause to feel sure; give reassurance to; "The airline tried to reassure the customers that the planes were safe". wn