Jil is of Hebrew origin, meaning 'God is my oath' or 'Yahweh is my oath'. It is a unisex name but is more commonly used for females. The name has gained popularity in recent years due to its unique sound and spelling. Jil is often associated with strength and confidence, as it shares roots with other strong Hebrew names such as Joel and Jill.
"The name Jil experienced its peak popularity between the years of 1957 and 1967 with a total of 184 births during this decade-long span, marking it as a prominent choice among parents during that time period. However, its usage significantly declined thereafter, with fewer than 20 births per year occurring from 1968 onwards."