When you want to describe how quickly something was accomplished, you might use the phrase "in record time," but there are many other synonyms you can use. For example, you might say "at lightning speed," "in no time at all," "with remarkable swiftness," or "in a flash." Other options include "in an instant," "in a jiffy," "in the blink of an eye," and "in a snap." Ultimately, the synonym you choose will depend on the context and tone of your writing or speech, and you may want to experiment with a few different options to find the one that best suits your needs.