Uncemented refers to something that is not held together by cement or adhesive. There are several synonyms for the word "uncemented" which can be used depending on the context. Words like unsecured, unfastened, unfixed, and unattached can be used to refer to something that is not held in place. Similarly, words like unanchored, unmoored, and unsteady can be used to describe something that lacks stability or is not firmly rooted. On a medical note, uncemented can be used to describe orthopedic implants. In this context, words like non-cemented, porous, and cementless can be used as synonyms.