Leisly is of Scandinavian origin, derived from the Old Norse elements 'leið' meaning 'track' and 'skíli' meaning 'wood'. It is a unique name that was popularized in the late 20th century, perhaps due to its similarity to other names like Leslie or Lindsay. Leisly is often considered unisex but is more commonly used for females.
Leisly had a notable spike in popularity between 2000 and 2001, with ten babies named Leisly born in the latter year alone. However, overall, it seems the name's usage has remained relatively steady over time, with an average of about five to seven births per year from 1996 to 2007, totaling 38 births during this period.