"Waltz off with" is a phrase that generally means to take something without permission or justification. There are many different synonyms to describe this action, including steal, pilfer, snatch, swipe, purloin, and abscond. Some other words that could be used to describe this action include misappropriate, embezzle, confiscate, commandeer, hijack, and appropriate. All of these words imply some kind of wrongdoing or illicit behavior, whether intentional or not. It's important to use these words carefully and with thought, as the implication of wrongdoing can have serious consequences for the person being accused of such action.