1. (

• guarantee ,
• ensure ,
• insure ,
• assure ,
• secure

) make certain of; "This nest egg will ensure a nice retirement for us"; "Preparation will guarantee success!" ;

2. (

• assure ,
• tell ,

) inform positively and with certainty and confidence; "I tell you that man is a crook!" ;

3. (

• 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" ;

4. (

• see ,
• check ,
• insure ,
• see_to_it ,
• ensure ,
• control ,
• ascertain ,
• assure

) 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" ;

5. (

• reassure ,
• assure

) cause to feel sure; give reassurance to; "The airline tried to reassure the customers that the planes were safe" ;

6. (

• promise ,
• assure ,

) make a promise or commitment ;