Thomasin

Thomasin is a feminine given name of English origin, a variant form derived from the male name Thomas. It is formed with the feminine suffix -in, aligning with related names such as Thomasine. The root name Thomas itself comes from the Aramaic Ta'oma', traditionally interpreted as “twin.” As a given name, Thomasin has appeared in English usage since early modern times but remains relatively uncommon in contemporary practice.

In modern popular culture, Thomasin is best known as the name of the teenage protagonist in Robert Eggers’ film The Witch (2015). In the movie,Thomasin is portrayed as a young girl navigating a harsh and isolating environment in 17th-century New England, with the character's name distinguishing her within the ensemble.

Historically, public recognition of individuals named Thomasin is limited, and the form is more frequently encountered in fiction or as a historical variant than as a widely used contemporary name. In broader usage, Thomasin sits alongside other feminine forms of Thomas, such as Thomasine, as part of a family of names that have shared roots and similar meanings.

Variations and related names include Thomasine, Thomasina, and Thomazine, all deriving from the same root. The name Thomasin remains a notable example of how English naming traditions adapt masculine forms into feminine variants for use as given names.