The term 'make modifications to' can be broken down into three crossword solutions: ADAPT (5 letters), ALTER (5 letters), and EDIT (4 letters). Adapting, altering, and editing are all processes of making changes to something. Adapting involves changing something to suit a new purpose or environment, while altering is the process of changing something in order to make it different from its original form. Editing is the process of making corrections or revisions to a text or other form of media. All three processes are used to make modifications to something.