The phrase "bone dry" refers to the complete absence of moisture or water. Its antonyms would be wet, damp, moist, or soggy. When something is wet, it contains a significant amount of water, while damp indicates that it is slightly wet or humid. Moist describes a pleasant level of dampness, while soggy denotes excessive wetness and often carries a negative connotation. Other antonyms may include hydrated or aqueous, indicating that something has a high level of water or has been dissolved in water. It is important to note that the choice of antonym depends on the context of the situation and the degree of dryness being described.