Option 1: Uninteresting -> This is a synonym of insipid, not an antonym.
Option 2: Savory -> This means flavorful and appetizing, which is the opposite of insipid.
Option 3: Spiritless -> This is a synonym of insipid, meaning lacking vigor or enthusiasm.
Option 4: Bland -> This is a synonym of insipid, meaning lacking flavor or interest.
Hence, Option 2: Savory -> "Insipid" means lacking flavor or interest, while "savory" means full of flavor and taste, making them antonyms -> correct