assure assure /əˈʃʊr/

verb

1. () Make certain of  ( secure , guarantee , ensure , assure , insure )
   make certain of
    This nest egg will ensure a nice retirement for us
   This nest egg will ensure a nice retirement for us
    Preparation will guarantee success!
   Preparation will guarantee success!
   
2. () Assure somebody of the truth of something with the intention of giving the listener confidence  ( assure )
   assure somebody of the truth of something with the intention of giving the listener confidence
    I assured him that traveling to Cambodia was safe
   I assured him that traveling to Cambodia was safe
   
3. () Inform positively and with certainty and confidence  ( tell , assure )
   inform positively and with certainty and confidence
    I tell you that man is a crook!
   I tell you that man is a crook!
   
4. () Be careful or certain to do something; make certain of something  ( control , ascertain , ensure , assure , check , insure , see , see to it )
   be careful or certain to do something; make certain of something
    He verified that the valves were closed
   He verified that the valves were closed
    See that the curtains are closed
   See that the curtains are closed
    Control the quality of the product
   control the quality of the product
   
5. () Cause to feel sure; give reassurance to  ( assure , reassure )
   cause to feel sure; give reassurance to
    The airline tried to reassure the customers that the planes were safe
   The airline tried to reassure the customers that the planes were safe
   
6. () Make a promise or commitment  ( assure , promise )
   make a promise or commitment
     I promise to be there on time for our meeting.
   I promise to be there on time for our meeting.