Maylie is a modern diminutive that extends May or Mae, the month name taken from the Roman goddess Maia, with the affectionate "-lie" ending; it is also an English spelling of the French Maelie, from the Breton Mael, "prince" or "chief". Maylie was rare in 2000 at number 14367, climbed through the 4000s in the 2010s and reached number 2949 in 2025, its best rank so far.