Iffy is a word that describes something that is uncertain or doubtful. Some of the synonyms for iffy include uncertain, doubtful, undecided, unsure, indecisive, ambiguous, unclear, and questionable. These words carry a sense of hesitancy, hesitation, or lack of confidence, indicating that something may not be exactly as it seems. Other synonyms for iffy may include risky, dicey, tricky, or unpredictable, indicating that something may have a level of danger or uncertainty associated with it. In any case, when you encounter something that feels iffy, you may want to approach with caution, gather more information, or seek the advice of others before making a decision.