Betsy

Betsy is an English diminutive of Elizabeth, which itself derives from the Hebrew name Elisheba, meaning my God is an oath or my God is abundance. It developed as a pet form alongside Betty, Bess, and Bessie, all of which were common informal variants of Elizabeth in English-speaking countries from the eighteenth century onward. The name gained particular cultural visibility in the United States, where Betsy Ross became a celebrated historical figure associated with the early American flag. Beth, Liz, and Eliza are among the many other cognates sharing the same Hebrew root.