Acting noncommittal is a common trait that some people exhibit when they don't want to appear too eager or committed to a particular task, situation, or event. However, there are several alternative words or phrases that can be used instead of "act noncommittal." Some of these synonyms include being vague, evasive, hesitant, nonchalant, indifferent, ambiguous, unenthusiastic, aloof, nonplussed, and lukewarm. All these words suggest a certain degree of detachment or lack of engagement with a particular issue or topic. It's important to note that while being noncommittal can be beneficial in certain situations, it can also lead to misunderstandings or mistrust in certain contexts.