assure

verb

1. 1

   be careful or certain to do something; make certain of something

   He verified that the valves were closed

   See that the curtains are closed

2. 2

   assure somebody of the truth of something with the intention of giving the listener confidence

   I assured him that traveling to Cambodia was safe

3. 3

   make a promise or commitment

4. 4

   make certain of

   This nest egg will ensure a nice retirement for us

   Preparation will guarantee success!

5. 5

   inform positively and with certainty and confidence

   I tell you that man is a crook!

6. 6

   cause to feel sure; give reassurance to

   The airline tried to reassure the customers that the planes were safe