The word "in dissoluble" has various antonyms depending on the context it's used. The antonyms for "in dissoluble" when referring to a relationship or bond include things like joinable, bondable, and reuniteable. If talking about a solid material or substance, antonyms for "in dissoluble" would be things like dissolvable, soluble, and breakdownable. Other antonyms include phrases like dissolvable, separable, and temporary, which suggest that the thing in question has a limit to its lasting power or strength. Ultimately, "in dissoluble" is a word that signifies permanence or unbreakability, so its antonyms are any words that suggest the opposite.