The term 'Makes Certain' can be expressed in three different ways: Ensures (7 letters), Assures (7 letters), and Seestoit (8 letters). Ensures is a verb meaning to make sure that something happens or is done. Assures is also a verb, meaning to tell someone that something will happen or is true in order to give them confidence or reassurance. Seestoit is an archaic verb meaning to make sure of something. All three terms are used to express the idea of making certain that something will happen or is true.