Noodling around is a colloquialism that is often used to describe someone who is wasting time or engaging in aimless activities. There are a number of synonyms that can be used to convey a similar meaning. Some common examples include dilly-dallying, loafing, lingering, idling, puttering around, and mucking about. These expressions all imply a lack of purpose or direction, suggesting that the person in question is not making the most of their time or energy. Of course, there are times when a little noodling around can be a pleasant and even productive activity; nonetheless, when used in a more negative sense, these synonyms can come in handy.