The term "most liquefying" refers to the property of a substance that can be easily converted into its liquid form. There are several synonyms for this term that can be used interchangeably in various contexts. These include "most fluid", "most runny", "most fluidic", "most melting", "most dissolving", "most thawing", and "most melting." These terms are commonly used in scientific and technical contexts while discussing the properties of substances. The choice of synonym depends on the context and the nature of the substance being discussed. Overall, these synonyms help in describing the physical properties of different substances to a great extent.