The phrase "double-quick times" means to do something quickly or at a fast pace. However, there are several synonyms that can be used to convey the same meaning. Some examples include: "rapidly," "swiftly," "hastily," "expeditiously," "speedily," "promptly," "quickly," "briskly," and "expediently." These words all indicate an urgency to complete a task in a timely manner. By using synonyms, writers can avoid redundancy and add variety to their language. It's important to choose the right word based on the context of the sentence and the tone of the writing.