From the woods; wild
Originally a short form of Sylvester, derived from the Latin word 'silva' meaning wood or forest. While it has evolved into a standalone nickname-style name, it retains its connection to nature and the outdoors.
About 10 boys were named Sly in 2025.
US births per 5-year period, 1990–present (SSA data).
Frontman of Sly and the Family Stone
Common nickname for actor Sylvester Stallone
Protagonist raccoon and master thief · Sly Cooper video game series
