verb \in-ˈshr\

: to make (something) sure, certain, or safe


Full Definition of ENSURE

transitive verb
:  to make sure, certain, or safe :  guarantee

Examples of ENSURE

  1. They took steps to ensure the safety of the passengers.
  2. <regulations that ensure the wholesomeness of our food>
  3. A combination of … personal courage, dashing leadership from the front, willingness to share the toughest rigours suffered by the ordinary soldiers, and a liberal dose of sheer good fortune ensured his stature as a great general. —Paul Cartledge, History Today, July 2004

Origin of ENSURE

Middle English, from Anglo-French ensurer, alteration of assurer — more at assure
First Known Use: 1660

Related to ENSURE

Synonym Discussion of ENSURE

ensure, insure, assure, secure mean to make a thing or person sure. ensure, insure, and assure are interchangeable in many contexts where they indicate the making certain or inevitable of an outcome, but ensure may imply a virtual guarantee <the government has ensured the safety of the refugees>, while insure sometimes stresses the taking of necessary measures beforehand <careful planning should insure the success of the party>, and assure distinctively implies the removal of doubt and suspense from a person's mind <I assure you that no harm will be done>. secure implies action taken to guard against attack or loss <sent reinforcements to secure their position>.


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