In a world where harmonious relationships matter, it makes sense to have a language that can help us communicate whether things are in sync or not. For instance, if one wants to express a feeling that two things are in perfect sync, they may use the word "matched." However, if you want to highlight that two things are particularly different or out of sync, the word "ill-matched" would be your go-to word. The antonyms for "more ill-matched" would include terms such as congenial, harmonious, compatible, fitting, proper, or similar. These words all point to a condition of things being in sync, or at least not at odds with each other.