The antonyms for the phrase "most jelled" can be varied depending on the context. If we consider the meaning of jelled, it suggests something that has solidified or formed a cohesive structure. Therefore, antonyms for jelled could include words like liquefy, dissolve, separate, disintegrate or fragment. Additionally, jelled could be seen as a synonym for harmonious, in which case the antonyms could be words like discordant, incompatible, disordered or chaotic. It is important to consider the context in which jelled is being used to appropriately find antonyms that accurately suit the intended meaning.