Foulings, which generally refers to the accumulation of unwanted substances on a surface, can have a range of antonyms depending on the context. For instance, in the context of maritime and naval operations, the antonyms for foulings might include "clean," "clear," or "unadulterated." In a more general sense, other potential antonyms might include "purified," "cleansed," or "disinfected." These words all convey a sense of freshness, cleanliness, and freedom from unwanted substances. In any context, the antonyms for foulings typically suggest the removal or prevention of buildup, and a return to a more pristine state.