General:
* Indecisive: This is the most common and direct synonym.
* Hesitant: This suggests someone who is unsure and reluctant to make a decision.
* Irresolute: This implies a lack of firmness or determination in making a choice.
* Vacillating: This describes someone who wavers back and forth between options.
* Ambivalent: This suggests mixed feelings or conflicting desires about a decision.
More informal:
* Wishy-washy: This is a more informal and often negative term.
* Fence-sitter: This refers to someone who avoids taking sides or making a decision.
* Ditherer: This emphasizes the act of delaying and procrastinating about making a choice.
More specific:
* Unsure: This simply indicates a lack of confidence in making a decision.
* Doubtful: This suggests skepticism or uncertainty about the best course of action.
* Confused: This implies a lack of clarity or understanding that prevents decision-making.
The best synonym to use will depend on the specific context and the tone you want to convey.