The phrase "more milk-and-water" can be used to describe something that lacks strength or substance, and is therefore considered weak or insipid. Antonyms for this phrase can include robust, potent, intense, or flavorful. These words are used to describe things that are strong, powerful, and impactful. For example, a bold statement is the antithesis of the milk-and-water phrase. Similarly, spicy food or a full-bodied wine can offer a counterpoint to weak or diluted flavors. In essence, by using antonyms for "more milk-and-water," we can communicate a sense of depth, intensity, and richness.