Most toward is a phrase that indicates a strong inclination or preference. Its antonym, therefore, would be a phrase that suggests the opposite - a lack of preference or inclination. One antonym for most toward could be indifferent, which means having no particular interest or preference. Another antonym could be against, meaning in opposition to or strongly disliking something. Similarly, a phrase like least interested could also be used as an antonym for most toward. It is important to understand the context in which the phrase is being used and the specific connotations associated with the words used to convey the intended meaning accurately.