Obtruncate is a technical term that refers to the removal of a portion from a solid object, resulting in a flat surface. There are a number of synonyms for this term, including truncate, amputate, sever, clip, prune, lop, dock, and truncate. These terms can be used to describe the act of removing a portion of an object, whether through physical cutting, pruning, or separation. Depending on the context in which they are used, these synonyms can have slightly different nuances, but all refer to some form of separation or removal. By using these synonyms, speakers and writers can add variety to their vocabulary and more accurately express the idea of obtruncate.