Livedo is a medical term that refers to a discolouration of the skin, often caused by a reduced blood flow. While there are no direct synonyms for the word "livedo", there are many related terms that are commonly associated with it in a medical context. These include mottling, patchiness, and purplish discoloration. Other similar terms might include skin flushing, bruising, and cyanosis. Depending on the underlying cause of the condition, there may be other relevant synonyms that could be used to describe it, such as venous insufficiency or peripheral artery disease. Ultimately, the best synonym for livedo will depend on the specific context in which it is being used.