Sile is a variation (Irish) of the name Julia (English, German, Polish, Portuguese, and Spanish).
Sile is also a diminutive (German) of the name Silvia (English, German, Italian, Portuguese, and Spanish).
Sile is not frequently used as a baby girl name. It is not listed in the top 1000. Among the family of girl names directly linked to Sile, Julia was the most regularly used in 2018.