In Old English, “on ān” meant “into one,” and the original meaning referred to something being in one state or course of action. Over time, the meaning of “anon” evolved into the temporal sense of “at once.” As an adverb, “anon” means to do something soon or shortly. It was commonly used in Old English and Middle English, but it has dropped out of use in modern language. However, if you want to add some flair to your conversation, this could be a fun word to pick back up. Instead of promising that you’ll do the dishes soon, pacify your partner with “anon.” It’s a fancy way to mask your procrastination.