There are several antonyms for the word "auspicating," which means to predict or foretell future events. The opposite of auspicating would be to doubt, distrust or discredit predictions. The words undermining, impugning, denouncing and repudiating could also act as antonyms of auspicating. While auspicating refers to the act of divination or forecasting, its antonyms pertain to the discrediting and contradicting the predictions. People who do not believe in astrology, fortune-telling or psychic readings are likely to discredit or repudiate the act of auspicating as mere superstition. The antonyms for auspicating imply a lack of faith in or trust in predictions.