Be-dewed means covered in dew, typically referring to plants, grass or other objects exposed to the morning dew. The antonyms for the word "be-dewed" could be "dry" or "arid". These terms refer to the absence of moisture or dew, making it the opposite of the original meaning.
Another antonym for "be-dewed" is "dehydrated", indicating a state where moisture has been removed, leaving the object in a parched state.
Additionally, "unclean" could be considered an antonym for "be-dewed", as it refers to objects that are dirty or dusty, with no dew or moisture on them.