There are several synonyms for the word "de-crepitating" that can be used to describe the sound or action of breaking or crumbling. Some words that can be used as synonyms for this term include cracking, shattering, splintering, disintegrating, breaking apart, collapsing, fragmenting, and crumbling. Each of these words can convey a slightly different meaning, depending on the context in which they are used. For example, "splintering" might be used to describe the breaking of a wooden object into small, sharp pieces, while "disintegrating" might be used to describe the slow, gradual breaking down of something over time. Ultimately, the choice of word will depend on the specific situation and the effect the writer is trying to create.