Definition of Assure

Verb: assure u'shÃ»r [N. Amer], u'shor or u'shÃ»r [Brit]

Make certain in the future
"Preparation will assure success!";
- guarantee, ensure, insure, secure
Inform positively and with certainty and confidence
"I assure you that man is a crook!";
- tell
Tell someone the truth of something with the intention of giving the listener confidence
"I assured him that travelling to Cambodia was safe"
Be careful or certain to do something; make certain of something
"assure that the curtains are closed";
- see, check, insure, see to it, ensure, control, ascertain
Cause to feel sure; give reassurance to
"The airline tried to assure the customers that the planes were safe";
- reassure
Make a commitment to do (or not to do) something in the future
- promise