ensure
1. [ verb ] make certain of
Synonyms: assure insure guarantee secure
Examples:

"This nest egg will ensure a nice retirement for us" "Preparation will guarantee success!"

Related terms: make doom guarantee guarantee
2. [ verb ] be careful or certain to do something; make certain of something
Synonyms: see insure check assure see_to_it ascertain control
Examples:

"He verified that the valves were closed" "See that the curtains are closed" "control the quality of the product"

Related terms: verify cover proofread cross-check double-check control card spot-check cinch determine control check check
Similar spelling:   enquire
  enquirer
  encourage
  encore
  enquiry
  Ensor
  Enger