Youthful; pledged to God
A modern American blend likely combining the name Jill, derived from the Latin Julia meaning youthful, with the suffix -isa, often drawn from Elizabeth, meaning pledged to God. It emerged in the late 20th century as a creative elaboration of classic roots.
Fewer than 5 girls were named Jillisa in 2025.
US births per 5-year period, 1990–present (SSA data).
