Believed abstractions refer to ideas, concepts or theories which are accepted as true. However, there are antonyms or opposite words that suggest the opposite. For example, disbelieved, doubted, rejected, questioned, and denied represent the antonyms of believed abstractions. If something is disbelieved, it means that it isn't accepted to be true and there is a sense of skepticism regarding it. Doubting, on the other hand, suggests that there is uncertainty or hesitation, and the idea or concept is not fully trusted. Rejected and denied represent a more definitive refusal to accept the idea or concept, and questions often arise as to whether the idea or concept is valid.