Circumstantiating means providing details that support a claim or argument. Antonyms for circumstantiating would be terms that suggest the opposite, including generalizing, oversimplifying or vagueness. Generalizing is the use of broad statements that are not backed up by specific examples or evidence. Oversimplifying is the act of reducing a complex issue or concept to something that is too simple or easy. Vagueness is the lack of clarity or specificity in language, which can make it difficult to understand or interpret a given claim or argument. These antonyms contrast with circumstantiating, which involves providing clear and specific details to bolster one's claims.