Decrepitating is a word that refers to the process of breaking or crumbling into small pieces. While there are no perfect antonyms for this word, words such as solidifying, strengthening, or coalescing can be considered opposites. These words represent the exact opposite of the process that decrepitating represents, as they refer to strengthening or combining something rather than breaking it down. Some related terms that may be considered antonyms include forming or building up. Regardless of the opposite term, when compared to decrepitating, these words signify creation and preservation rather than destruction or disintegration.