One synonym for the word "precontrive" is prearrange. This refers to the act of planning something in advance, strategically laying out the steps that need to be taken in order to achieve a particular outcome. Another synonym is predetermine, which means to decide beforehand how something will turn out. To premeditate is also a synonym for precontrive, which refers to the process of thinking through a plan or decision prior to taking action. Finally, you can use the term preplan in place of precontrive, which indicates that careful thought and consideration have been given to a specific course of action before it is executed.