The phrase "were positive" implies a sense of certainty or affirmation, indicating that something is true or favorable. Therefore, the antonyms for "were positive" would be words or phrases that suggest doubt, negativity, or uncertainty. Examples of antonyms for this phrase include "were negative," "were unsure," "were doubtful," "were skeptical," "were pessimistic," and "were uncertain." These antonyms can be used to express a lack of confidence or faith in a statement or situation, suggesting that there is room for further investigation, skepticism, or doubt.