Elsie

My God is an oath, through Elizabeth.

Elsie is a feminine name used in English, formed as a diminutive of Elizabeth. It carries the traditional meaning “my God is an oath” through that longer name. Elsie can also stand as a given name in its own right: the link to Elizabeth explains its background without requiring the longer form in everyday use. The two-beat rhythm gives Elsie a small, lively shape. Its l softens the opening, while the clear s adds a little edge before the light final vowel. To our ear, that balance feels sweet without becoming elaborate. The affectionate quality is part of its appeal, and also a useful point of choice: Elsie offers immediate informality, while Elizabeth leaves more room for a formal full name alongside a short everyday form.

Etymology: Elsie is an affectionate short form of Elizabeth, whose root is the Hebrew name Elisheva. Its English usage and deeper Hebrew origin describe different parts of its history.