[ ɪn'ʃɔ: , -'ʃʊə , ɛn- ]
■ verb make certain that (something) will occur or be so.
↘( ~ against ) make sure that (a problem) does not occur.
Origin
ME: from Anglo-Norman Fr. enseurer . alt. of OFr. aseurer , earlier form of assurer (see assure ).
Usage
On the difference between ~ and insure , see usage at insure .