There are several synonyms for the word "mudflow", which is a type of natural disaster that is characterized by the rapid movement of rock, soil, and other debris mixed with water. One synonym for mudflow is "lahar", which is a type of volcanic mudflow that occurs when volcanic ash and debris mix with water. Another synonym for mudflow is "debris flow", which is a type of landslide that occurs when loose soil, rock, and other debris mix with water and flow downhill. Other synonyms for mudflow include "mudslide", "landslide", and "avalanche", all of which describe the movement of debris down a slope due to the force of gravity.