Thomasine

Thomasine is the feminine form of Thomas, a name of Aramaic origin meaning "twin." This elegant variation emerged during medieval times when feminizing male names by adding suffixes like "-ine" or "-ina" was common practice. While never achieving widespread popularity, Thomasine saw occasional use in England from the Middle Ages through the 19th century. The name carries a distinctive vintage charm with its classical derivation and melodious three-syllable structure. Thomasine offers a more elaborate alternative to the simpler Thomasa or Tomasa variants. Today, it remains quite rare, appealing to parents drawn to historical names with feminine elegance. The name combines traditional roots with an uncommon status, making it both familiar and distinctive.

Pronounced TOM-uh-seen.

As of October 2026, Thomasine ranked #13305 in US births in 1994 SSA, peaked at #1004 in 1941.