Although the term "most lineal" does not have a clear antonym, it can be substituted by several term pairs that connote oppositional concepts. For instance, "least linear" refers to the opposite of the most straightforward, direct, and logical path. "Most convoluted" is an antonym that suggests a more twisted or confusing route. Another option is "least sequential", which denotes the opposite of following or happening in a particular order. Ultimately, identifying and using these oppositional terms can help to emphasize the contrast between different ideas or perspectives, depending on the context of the conversation, writing, or analysis.