Most full-flavored refers to a rich, savory taste that is intense and robust. Its antonyms would be bland, tasteless, and insipid. Bland refers to something that lacks flavor and is boring or dull. Tasteless denotes the absence of flavor, and when used to describe food or drinks, it means it has no distinguishing taste. Insipid, on the other hand, means something that is lacking in taste or is unappetizing, often used to describe a dish or sauce that is dull and uninteresting. In general, the antonyms for most full-flavored would be words that denote a lack of taste or flavor.